Ipv6 configuration with prefix delegation and SLAAC

the_jackal777 · March 14, 2025, 8:08pm

My Provider provides me with a static /48 Prefix which I would like to use with SLAAC. I understand that I need to use Prefix Delegation. In addition I use address and sla-id to create /64 net for the lan.

However my config does not work and I still see FE80 assigned to both eth0 and eth1 plus it triggers the following WARNING: could not change “eth0” flow control setting!

eth0 is WAN
eth1 is LAN

set interfaces ethernet eth0 address ‘dhcpv6’
set interfaces ethernet eth0 dhcpv6-options pd 0 interface eth1 address ‘1’
set interfaces ethernet eth0 dhcpv6-options pd 0 interface eth1 sla-id ‘1’
set interfaces ethernet eth0 dhcpv6-options pd 0 length ‘48’
set interfaces ethernet eth0 ipv6 address autoconf

Appreciate your help.

c-po · March 15, 2025, 7:52am

Are you certain that your ISP hands out the prefix via DHCPv6-PD?

the_jackal777 · March 15, 2025, 8:52am

I think so, this is what they specify:
Das fixe IPv6-Prefix wird über DHCPv6-Prefix-Delegation zugewiesen.

c-po · March 15, 2025, 1:59pm

Which german ISP are you using?

Do you have a firewall in place?

the_jackal777 · March 15, 2025, 2:06pm

init7 from Switzerland. No ipv6 firewall rules currently. Just tried to enable the interface.

c-po · March 15, 2025, 2:16pm

Does show log dhcpv6 client interface pppoe0 show anything unusual?

This is what I’m running with German Telekom:

set interfaces pppoe pppoe0 authentication password xxxxxx
set interfaces pppoe pppoe0 authentication username xxxxxx
set interfaces pppoe pppoe0 description 'Telekom VDSL 50/20Mbit'
set interfaces pppoe pppoe0 dhcpv6-options duid 'xx:xx:xx:xx:xx:7e:xx:xx:xx:xx:xx:66:xx:xx:xx:xx:xx:56'
set interfaces pppoe pppoe0 dhcpv6-options pd 0 interface eth0.10 address '1'
set interfaces pppoe pppoe0 dhcpv6-options pd 0 interface eth0.10 sla-id '10'
set interfaces pppoe pppoe0 dhcpv6-options pd 0 interface eth1.20 address '1'
set interfaces pppoe pppoe0 dhcpv6-options pd 0 interface eth1.20 sla-id '20'
set interfaces pppoe pppoe0 dhcpv6-options pd 0 length '56'
set interfaces pppoe pppoe0 ip adjust-mss '1452'
set interfaces pppoe pppoe0 ipv6 address autoconf
set interfaces pppoe pppoe0 ipv6 adjust-mss '1432'
set interfaces pppoe pppoe0 no-peer-dns
set interfaces pppoe pppoe0 source-interface 'eth3.7'

the_jackal777 · March 15, 2025, 4:02pm

This is the result of the dhcpv6 log:

Mar 15 15:58:24 systemd[1]: Starting [email protected] - WIDE DHCPv6 client on eth0…
Mar 15 15:58:24 dhcp6c[100163]: get_duid: extracted an existing DUID from /var/lib/dhcpv6/dhcp6c_duid: 00:04:82:00:6b:9c:93:af:00:00:00:00:00:00:00:00:00:00
Mar 15 15:58:24 dhcp6c[100163]: dhcp6_ctl_authinit: failed to open /run/dhcp6c/dhcp6c.eth0.sock: No such file or directory
Mar 15 15:58:24 dhcp6c[100163]: client6_init: failed initialize control message authentication
Mar 15 15:58:24 dhcp6c[100163]: client6_init: skip opening control port
Mar 15 15:58:24 dhcp6c[100163]: cfdebug_print: <3>comment [### Autogenerated by interface.py ###] (37)
Mar 15 15:58:24 dhcp6c[100163]: cfdebug_print: <3>comment [# man index of all unix and linux man pages on unix.com] (57)
Mar 15 15:58:24 dhcp6c[100163]: cfdebug_print: <3>[interface] (9)
Mar 15 15:58:24 dhcp6c[100163]: cfdebug_print: <5>[eth0] (4)
Mar 15 15:58:24 dhcp6c[100163]: cfdebug_print: <3>begin of closure [{] (1)
Mar 15 15:58:24 dhcp6c[100163]: cfdebug_print: <3>[request] (7)
Mar 15 15:58:24 dhcp6c[100163]: cfdebug_print: <3>[domain-name-servers] (19)
Mar 15 15:58:24 dhcp6c[100163]: cfdebug_print: <3>end of sentence [;] (1)
Mar 15 15:58:24 dhcp6c[100163]: cfdebug_print: <3>[request] (7)
Mar 15 15:58:24 dhcp6c[100163]: cfdebug_print: <3>[domain-name] (11)
Mar 15 15:58:24 dhcp6c[100163]: cfdebug_print: <3>end of sentence [;] (1)
Mar 15 15:58:24 dhcp6c[100163]: cfdebug_print: <3>[send] (4)
Mar 15 15:58:24 dhcp6c[100163]: cfdebug_print: <3>[ia-na] (5)
Mar 15 15:58:24 dhcp6c[100163]: cfdebug_print: <3>[0] (1)
Mar 15 15:58:24 dhcp6c[100163]: cfdebug_print: <3>end of sentence [;] (1)
Mar 15 15:58:24 dhcp6c[100163]: cfdebug_print: <3>comment [# non-temporary address] (23)
Mar 15 15:58:24 dhcp6c[100163]: cfdebug_print: <3>[send] (4)
Mar 15 15:58:24 dhcp6c[100163]: cfdebug_print: <3>[ia-pd] (5)
Mar 15 15:58:24 dhcp6c[100163]: cfdebug_print: <3>[0] (1)
Mar 15 15:58:24 dhcp6c[100163]: cfdebug_print: <3>end of sentence [;] (1)
Mar 15 15:58:24 dhcp6c[100163]: cfdebug_print: <3>comment [# prefix delegation #0] (22)
Mar 15 15:58:24 dhcp6c[100163]: cfdebug_print: <3>[script] (6)
Mar 15 15:58:24 dhcp6c[100163]: cfdebug_print: <3>[“/etc/wide-dhcpv6/dhcp6c.eth0.script”] (37)
Mar 15 15:58:24 dhcp6c[100163]: cfdebug_print: <3>end of sentence [;] (1)
Mar 15 15:58:24 dhcp6c[100163]: cfdebug_print: <3>end of closure [}] (1)

c-po · March 15, 2025, 4:14pm

You should see something like this in your logs when your ISP hands out the prefix.
Did you take a tcpdump and check if VyOS transmitted the DHCPv6 request properly?

Using: mon log dhcpv6 client interface pppoe0

Mar 15 17:12:43 dhcp6c[50919]: dhcp6_get_options: get DHCP option IA_PD, len 41
Mar 15 17:12:43 dhcp6c[50919]:   IA_PD: ID=0, T1=43200, T2=69120
Mar 15 17:12:43 dhcp6c[50919]: copyin_option: get DHCP option IA_PD prefix, len 25
Mar 15 17:12:43 dhcp6c[50919]: copyin_option:   IA_PD prefix: 2003:ec:7000:0000::/56 pltime=86400 vltime=86400

the_jackal777 · March 15, 2025, 4:40pm

Appologies, I think I did send an outdated log version, the most recent one is attached.

Mar 15 16:16:13 systemd[1]: Started [email protected] - WIDE DHCPv6 client on eth0.

Mar 15 16:16:13 dhcp6c[102568]: cfdebug_print: <3>[48] (2)
Mar 15 16:16:13 dhcp6c[102568]: cfdebug_print: <3>[infinity] (8)
Mar 15 16:16:13 dhcp6c[102568]: cfdebug_print: <3>end of sentence [;] (1)
Mar 15 16:16:13 dhcp6c[102568]: cfdebug_print: <3>[prefix-interface] (16)
Mar 15 16:16:13 dhcp6c[102568]: cfdebug_print: <5>[eth1] (4)
Mar 15 16:16:13 dhcp6c[102568]: cfdebug_print: <3>begin of closure [{] (1)
Mar 15 16:16:13 dhcp6c[102568]: cfdebug_print: <3>[sla-len] (7)
Mar 15 16:16:13 dhcp6c[102568]: cfdebug_print: <3>[16] (2)
Mar 15 16:16:13 dhcp6c[102568]: cfdebug_print: <3>end of sentence [;] (1)
Mar 15 16:16:13 dhcp6c[102568]: cfdebug_print: <3>[sla-id] (6)
Mar 15 16:16:13 dhcp6c[102568]: cfdebug_print: <3>[1] (1)
Mar 15 16:16:13 dhcp6c[102568]: cfdebug_print: <3>end of sentence [;] (1)
Mar 15 16:16:13 dhcp6c[102568]: cfdebug_print: <3>[ifid] (4)
Mar 15 16:16:13 dhcp6c[102568]: cfdebug_print: <3>[1] (1)
Mar 15 16:16:13 dhcp6c[102568]: cfdebug_print: <3>end of sentence [;] (1)
Mar 15 16:16:13 dhcp6c[102568]: cfdebug_print: <3>end of closure [}] (1)
Mar 15 16:16:13 dhcp6c[102568]: cfdebug_print: <3>end of sentence [;] (1)
Mar 15 16:16:13 dhcp6c[102568]: cfdebug_print: <3>end of closure [}] (1)
Mar 15 16:16:13 dhcp6c[102568]: cfdebug_print: <3>end of sentence [;] (1)
Mar 15 16:16:13 dhcp6c[102568]: configure_pool: called
Mar 15 16:16:13 dhcp6c[102568]: clear_poolconf: called
Mar 15 16:16:13 dhcp6c[102569]: dhcp6_reset_timer: reset a timer on eth0, state=INIT, timeo=0, retrans=645
Mar 15 16:16:14 dhcp6c[102569]: client6_send: a new XID (3c00f) is generated
Mar 15 16:16:14 dhcp6c[102569]: copy_option: set client ID (len 18)
Mar 15 16:16:14 dhcp6c[102569]: copy_option: set elapsed time (len 2)
Mar 15 16:16:14 dhcp6c[102569]: copyout_option: set IA_PD prefix
Mar 15 16:16:14 dhcp6c[102569]: copyout_option: set IA_PD
Mar 15 16:16:14 dhcp6c[102569]: client6_send: transmit failed: Operation not permitted
Mar 15 16:16:14 dhcp6c[102569]: dhcp6_reset_timer: reset a timer on eth0, state=SOLICIT, timeo=0, retrans=1005
Mar 15 16:16:15 dhcp6c[102569]: copy_option: set client ID (len 18)
Mar 15 16:16:15 dhcp6c[102569]: copy_option: set elapsed time (len 2)
Mar 15 16:16:15 dhcp6c[102569]: copyout_option: set IA_PD prefix
Mar 15 16:16:15 dhcp6c[102569]: copyout_option: set IA_PD
Mar 15 16:16:15 dhcp6c[102569]: client6_send: transmit failed: Operation not permitted
Mar 15 16:16:15 dhcp6c[102569]: dhcp6_reset_timer: reset a timer on eth0, state=SOLICIT, timeo=1, retrans=2095
Mar 15 16:16:17 dhcp6c[102569]: copy_option: set client ID (len 18)
Mar 15 16:16:17 dhcp6c[102569]: copy_option: set elapsed time (len 2)
Mar 15 16:16:17 dhcp6c[102569]: copyout_option: set IA_PD prefix
Mar 15 16:16:17 dhcp6c[102569]: copyout_option: set IA_PD
Mar 15 16:16:17 dhcp6c[102569]: client6_send: transmit failed: Operation not permitted
Mar 15 16:16:17 dhcp6c[102569]: dhcp6_reset_timer: reset a timer on eth0, state=SOLICIT, timeo=2, retrans=4302
Mar 15 16:16:22 dhcp6c[102569]: copy_option: set client ID (len 18)
Mar 15 16:16:22 dhcp6c[102569]: copy_option: set elapsed time (len 2)
Mar 15 16:16:22 dhcp6c[102569]: copyout_option: set IA_PD prefix
Mar 15 16:16:22 dhcp6c[102569]: copyout_option: set IA_PD
Mar 15 16:16:22 dhcp6c[102569]: client6_send: transmit failed: Operation not permitted
Mar 15 16:16:22 dhcp6c[102569]: dhcp6_reset_timer: reset a timer on eth0, state=SOLICIT, timeo=3, retrans=8486
Mar 15 16:16:30 dhcp6c[102569]: copy_option: set client ID (len 18)
Mar 15 16:16:30 dhcp6c[102569]: copy_option: set elapsed time (len 2)
Mar 15 16:16:30 dhcp6c[102569]: copyout_option: set IA_PD prefix
Mar 15 16:16:30 dhcp6c[102569]: copyout_option: set IA_PD
Mar 15 16:16:30 dhcp6c[102569]: client6_send: transmit failed: Operation not permitted
Mar 15 16:16:30 dhcp6c[102569]: dhcp6_reset_timer: reset a timer on eth0, state=SOLICIT, timeo=4, retrans=17599
Mar 15 16:16:48 dhcp6c[102569]: copy_option: set client ID (len 18)
Mar 15 16:16:48 dhcp6c[102569]: copy_option: set elapsed time (len 2)
Mar 15 16:16:48 dhcp6c[102569]: copyout_option: set IA_PD prefix
Mar 15 16:16:48 dhcp6c[102569]: copyout_option: set IA_PD
Mar 15 16:16:48 dhcp6c[102569]: client6_send: transmit failed: Operation not permitted
Mar 15 16:16:48 dhcp6c[102569]: dhcp6_reset_timer: reset a timer on eth0, state=SOLICIT, timeo=5, retrans=35562
Mar 15 16:17:14 dhcp6c[102569]: dhcp6_remove_event: removing an event on eth0, state=SOLICIT
Mar 15 16:17:14 dhcp6c[102569]: check_exit: exiting
Mar 15 16:17:14 systemd[1]: Stopping [email protected] - WIDE DHCPv6 client on eth0...
Mar 15 16:17:14 systemd[1]: [email protected]: Deactivated successfully.
Mar 15 16:17:14 systemd[1]: Stopped [email protected] - WIDE DHCPv6 client on eth0.

c-po · March 15, 2025, 6:00pm

Please share your full configurarion and version used.

the_jackal777 · March 15, 2025, 6:58pm

Release version: 1.5-stream-2025-Q1
My config is attached, which works as intended

config.boot-vyos.20250315_161842.txt (13.5 KB)

ipv6 configuration attempt as per below:

set interfaces ethernet eth0 address 'dhcpv6'
set interfaces ethernet eth0 dhcpv6-options pd 0 interface eth1 address '1'
set interfaces ethernet eth0 dhcpv6-options pd 0 interface eth1 sla-id '1'
set interfaces ethernet eth0 dhcpv6-options pd 0 length '48'
set interfaces ethernet eth0 ipv6 address autoconf

c-po · March 15, 2025, 10:30pm

Thank you for the config, I have a suspicion. Can you try with the latest rolling version?

the_jackal777 · March 16, 2025, 8:35am

First of all many thanks for your help, really appreciated. What do you think is wrong?
This is my production system and happy to contribute. However, I like to be able to switch back to the current working image/config without too much effort. For the test, I would issue the following command:

add image system https://github.com/vyos/vyos-nightly-build/releases/download/2025.03.15-0018-rolling/vyos-2025.03.15-0018-rolling-generic-amd64.iso

Afterwards system will reboot with the new rolling image and it will use a copy of my current 1.5-stream-2025-Q1 config. I will amend the config with the specific ipv6 configuration which we think will work:

set interfaces ethernet eth0 address 'dhcpv6'
set interfaces ethernet eth0 dhcpv6-options pd 0 interface eth1 address '1'
set interfaces ethernet eth0 dhcpv6-options pd 0 interface eth1 sla-id '1'
set interfaces ethernet eth0 dhcpv6-options pd 0 length '48'
set interfaces ethernet eth0 ipv6 address autoconf

If I like to switch back to my 1.5 stream image/config, I would issue the following command

set system image default-boot [image-name]

This will than boot by old stream image with the original config which has not been amended by any of the changes above. Is my understanding correct? I cannot compromise my current working system, giving that I spent quite some time after my move from pfsense to vyos.

c-po · March 16, 2025, 9:10am

Your understanding how VyOS works is pretty solid.

That‘s how to do it, you can always boot into a previous image and the configuration it had when things go sideways.

the_jackal777 · March 16, 2025, 10:49am

I did now start the current rolling interface. When initiating the ipv6 configuration below:

set interfaces ethernet eth0 address 'dhcpv6'
set interfaces ethernet eth0 dhcpv6-options pd 0 interface eth1 address '1'
set interfaces ethernet eth0 dhcpv6-options pd 0 interface eth1 sla-id '1'
set interfaces ethernet eth0 dhcpv6-options pd 0 length '48'
set interfaces ethernet eth0 ipv6 address autoconf

I get the following: WARNING: could not change "eth0" flow control setting!

I did then issue: show log dhcpv6 client interface eth0
Result is:

Mar 16 10:41:19 systemd[1]: Starting [email protected] - WIDE DHCPv6 client on eth0...
Mar 16 10:41:19 systemd[1]: Started [email protected] - WIDE DHCPv6 client on eth0.
Mar 16 10:41:19 systemd[1]: Stopping [email protected] - WIDE DHCPv6 client on eth0...
Mar 16 10:41:19 systemd[1]: [email protected]: Deactivated successfully.
Mar 16 10:41:19 systemd[1]: Stopped [email protected] - WIDE DHCPv6 client on eth0.
Mar 16 10:41:19 systemd[1]: Starting [email protected] - WIDE DHCPv6 client on eth0...
Mar 16 10:41:19 systemd[1]: Started [email protected] - WIDE DHCPv6 client on eth0.

ip addr still shows the following:
inet6 fe80::527c:6fff:fe7a:fc08/64 scope link valid_lft forever preferred_lft forever

c-po · March 16, 2025, 2:54pm

Remove this setting. Did you also try a tcpdump to capture whats going on?

the_jackal777 · March 16, 2025, 3:00pm

Done, log still shows this:

Mar 16 15:00:58 systemd[1]: [email protected]: Deactivated successfully.
Mar 16 15:00:58 systemd[1]: Stopped [email protected] - WIDE DHCPv6 client on eth0.
Mar 16 15:01:00 systemd[1]: Starting [email protected] - WIDE DHCPv6 client on eth0...
Mar 16 15:01:00 systemd[1]: Started [email protected] - WIDE DHCPv6 client on eth0.

I’ve never done a tcpdump. Can you help me on this? I’ve tried the following:

tcpdump -i eth0 -vv ip6

15:13:39.195820 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff88:9b6f: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:7dbd:c23a:4188:9b6f
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
15:13:39.540585 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ffd3:7a53: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:dd17:9166:85d3:7a53
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
15:13:39.927813 IP6 (class 0xe0, hlim 1, next-header UDP (17) payload length: 168) fe80::56be:f7ff:fe08:5775.dhcpv6-client > ff02::1:2.dhcpv6-server: [udp sum ok] dhcp6 relay-fwd (linkaddr=:: peeraddr=fe80::56be:f7ff:fe08:5775 (relay-message (dhcp6 renew (xid=c719b (client-ID hwaddr/time type 1 time 643702607 54bef7085775) (server-ID hwaddr/time type 1 time 708449505 8a9a8c6cf4de) (option-request DNS-server DNS-search-list Client-FQDN SNTP-servers) (elapsed-time 0) (IA_PD IAID:4144519029 T1:3600 T2:5400 (IA_PD-prefix 2a02:168:699e::/48 pltime:7200 vltime:7500)))) (interface-ID 73332e373930686f6e5f...))
15:13:40.246211 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff88:9b6f: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:7dbd:c23a:4188:9b6f
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
15:13:40.632634 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ffd3:7a53: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:dd17:9166:85d3:7a53
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
15:13:41.270197 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 104) fe80::200:f7ff:fef7:256 > ip6-allnodes: [icmp6 sum ok] ICMP6, router advertisement, length 104
	hop limit 64, Flags [managed, other stateful], pref high, router lifetime 1800s, reachable time 0ms, retrans timer 0ms
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
	  mtu option (5), length 8 (1):  1500
	    0x0000:  0000 0000 05dc
	  rdnss option (25), length 40 (5):  lifetime 30s, addr: ns10.init7.net addr: ns20.init7.net
	    0x0000:  011f 0000 001e 2001 1620 2777 0001 0000
	    0x0010:  0000 0000 0010 2001 1620 2777 0002 0000
	    0x0020:  0000 0000 0020
	  prefix info option (3), length 32 (4): 2a02:168:2000:14::/64, Flags [onlink, auto], valid time 2592000s, pref. time 604800s
	    0x0000:  40c0 0027 8d00 0009 3a80 0000 0000 2a02
	    0x0010:  0168 2000 0014 0000 0000 0000 0000
15:13:41.281090 IP6 (hlim 1, next-header Options (0) payload length: 116) fe80::da58:d7ff:fe01:68c > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 5 group record(s) [gaddr ff02::1:ff00:52f to_ex { }] [gaddr ff02::1:ff00:0 to_ex { }] [gaddr ff02::1:ff01:68c to_ex { }] [gaddr ff05::2 to_ex { }] [gaddr ip6-allrouters to_ex { }]
15:13:41.308379 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff88:9b6f: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:7dbd:c23a:4188:9b6f
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
15:13:41.709331 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ffd3:7a53: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:dd17:9166:85d3:7a53
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
15:13:41.829233 IP6 (hlim 1, next-header Options (0) payload length: 116) fe80::da58:d7ff:fe01:68c > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 5 group record(s) [gaddr ff02::1:ff00:52f to_ex { }] [gaddr ff02::1:ff00:0 to_ex { }] [gaddr ff02::1:ff01:68c to_ex { }] [gaddr ff05::2 to_ex { }] [gaddr ip6-allrouters to_ex { }]
15:13:42.182469 IP6 (hlim 1, next-header UDP (17) payload length: 144) fe80::4e5e:cff:fec6:fe84.5678 > ip6-allnodes.5678: [udp sum ok] UDP, length 136
15:13:42.319246 IP6 (hlim 1, next-header Options (0) payload length: 96) fe80::227c:14ff:fef4:342d > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 4 group record(s) [gaddr ff02::1:ff00:0 to_ex { }] [gaddr ff02::1:fff4:342d to_ex { }] [gaddr ff05::2 to_ex { }] [gaddr ip6-allrouters to_ex { }]
15:13:42.324288 IP6 (hlim 1, next-header Options (0) payload length: 96) fe80::da58:d7ff:fe00:3769 > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 4 group record(s) [gaddr ff02::1:ff00:0 to_ex { }] [gaddr ff02::1:ff00:3769 to_ex { }] [gaddr ff05::2 to_ex { }] [gaddr ip6-allrouters to_ex { }]
15:13:42.326703 IP6 (hlim 1, next-header Options (0) payload length: 96) fe80::da58:d7ff:fe00:2098 > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 4 group record(s) [gaddr ff02::1:ff00:0 to_ex { }] [gaddr ff02::1:ff00:2098 to_ex { }] [gaddr ff05::2 to_ex { }] [gaddr ip6-allrouters to_ex { }]
15:13:42.330795 IP6 (hlim 1, next-header Options (0) payload length: 116) fe80::da58:d7ff:fe00:5983 > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 5 group record(s) [gaddr ff02::1:ff00:2ae to_ex { }] [gaddr ff02::1:ff00:0 to_ex { }] [gaddr ff02::1:ff00:5983 to_ex { }] [gaddr ff05::2 to_ex { }] [gaddr ip6-allrouters to_ex { }]
15:13:42.332967 IP6 (hlim 1, next-header Options (0) payload length: 116) fe80::f690:eaff:fe00:dea3 > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 5 group record(s) [gaddr ff02::1:ff00:396 to_ex { }] [gaddr ff02::1:ff00:0 to_ex { }] [gaddr ff02::1:ff00:dea3 to_ex { }] [gaddr ff05::2 to_ex { }] [gaddr ip6-allrouters to_ex { }]
15:13:42.332967 IP6 (hlim 1, next-header Options (0) payload length: 116) fe80::e638:83ff:fe22:c215 > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 5 group record(s) [gaddr ff02::1:ff00:37d to_ex { }] [gaddr ff02::1:ff00:0 to_ex { }] [gaddr ff02::1:ff22:c215 to_ex { }] [gaddr ff05::2 to_ex { }] [gaddr ip6-allrouters to_ex { }]
15:13:42.336301 IP6 (hlim 1, next-header Options (0) payload length: 96) fe80::da58:d7ff:fe00:8695 > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 4 group record(s) [gaddr ff02::1:ff00:0 to_ex { }] [gaddr ff02::1:ff00:8695 to_ex { }] [gaddr ff05::2 to_ex { }] [gaddr ip6-allrouters to_ex { }]
15:13:42.338651 IP6 (hlim 1, next-header Options (0) payload length: 116) fe80::da58:d7ff:fe01:1ba4 > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 5 group record(s) [gaddr ff02::1:ff00:68c to_ex { }] [gaddr ff02::1:ff00:0 to_ex { }] [gaddr ff02::1:ff01:1ba4 to_ex { }] [gaddr ff05::2 to_ex { }] [gaddr ip6-allrouters to_ex { }]
15:13:42.359157 IP6 (hlim 1, next-header Options (0) payload length: 96) fe80::2890:a4ff:fe14:9ff4 > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 4 group record(s) [gaddr ff02::1:ff00:0 to_ex { }] [gaddr ff02::1:ff14:9ff4 to_ex { }] [gaddr ff05::2 to_ex { }] [gaddr ip6-allrouters to_ex { }]
15:13:42.400067 IP6 (hlim 1, next-header Options (0) payload length: 116) fe80::e263:daff:fe8c:907b > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 5 group record(s) [gaddr ff02::1:ff00:74e to_ex { }] [gaddr ff02::1:ff00:0 to_ex { }] [gaddr ff02::1:ff8c:907b to_ex { }] [gaddr ff05::2 to_ex { }] [gaddr ip6-allrouters to_ex { }]
15:13:42.415703 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff00:2e: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14::2e
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
15:13:42.474234 IP6 (hlim 1, next-header Options (0) payload length: 96) fe80::da58:d7ff:fe00:8695 > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 4 group record(s) [gaddr ff02::1:ff00:0 to_ex { }] [gaddr ff02::1:ff00:8695 to_ex { }] [gaddr ff05::2 to_ex { }] [gaddr ip6-allrouters to_ex { }]
15:13:42.520428 IP6 (hlim 1, next-header Options (0) payload length: 116) fe80::da58:d7ff:fe00:5983 > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 5 group record(s) [gaddr ff02::1:ff00:2ae to_ex { }] [gaddr ff02::1:ff00:0 to_ex { }] [gaddr ff02::1:ff00:5983 to_ex { }] [gaddr ff05::2 to_ex { }] [gaddr ip6-allrouters to_ex { }]
15:13:42.613162 IP6 (hlim 1, next-header Options (0) payload length: 116) fe80::e638:83ff:fe22:c215 > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 5 group record(s) [gaddr ff02::1:ff00:37d to_ex { }] [gaddr ff02::1:ff00:0 to_ex { }] [gaddr ff02::1:ff22:c215 to_ex { }] [gaddr ff05::2 to_ex { }] [gaddr ip6-allrouters to_ex { }]
15:13:42.652246 IP6 (hlim 1, next-header Options (0) payload length: 116) fe80::f690:eaff:fe00:dea3 > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 5 group record(s) [gaddr ff02::1:ff00:396 to_ex { }] [gaddr ff02::1:ff00:0 to_ex { }] [gaddr ff02::1:ff00:dea3 to_ex { }] [gaddr ff05::2 to_ex { }] [gaddr ip6-allrouters to_ex { }]
15:13:42.701028 IP6 (hlim 1, next-header Options (0) payload length: 116) fe80::e263:daff:fe8c:907b > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 5 group record(s) [gaddr ff02::1:ff00:74e to_ex { }] [gaddr ff02::1:ff00:0 to_ex { }] [gaddr ff02::1:ff8c:907b to_ex { }] [gaddr ff05::2 to_ex { }] [gaddr ip6-allrouters to_ex { }]
15:13:42.788923 IP6 (hlim 1, next-header Options (0) payload length: 96) fe80::227c:14ff:fef4:342d > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 4 group record(s) [gaddr ff02::1:ff00:0 to_ex { }] [gaddr ff02::1:fff4:342d to_ex { }] [gaddr ff05::2 to_ex { }] [gaddr ip6-allrouters to_ex { }]
15:13:42.884273 IP6 (hlim 1, next-header Options (0) payload length: 96) fe80::da58:d7ff:fe00:3769 > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 4 group record(s) [gaddr ff02::1:ff00:0 to_ex { }] [gaddr ff02::1:ff00:3769 to_ex { }] [gaddr ff05::2 to_ex { }] [gaddr ip6-allrouters to_ex { }]
15:13:42.919302 IP6 (hlim 1, next-header Options (0) payload length: 96) fe80::2890:a4ff:fe14:9ff4 > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 4 group record(s) [gaddr ff02::1:ff00:0 to_ex { }] [gaddr ff02::1:ff14:9ff4 to_ex { }] [gaddr ff05::2 to_ex { }] [gaddr ip6-allrouters to_ex { }]
15:13:42.926761 IP6 (hlim 1, next-header Options (0) payload length: 116) fe80::da58:d7ff:fe01:1ba4 > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 5 group record(s) [gaddr ff02::1:ff00:68c to_ex { }] [gaddr ff02::1:ff00:0 to_ex { }] [gaddr ff02::1:ff01:1ba4 to_ex { }] [gaddr ff05::2 to_ex { }] [gaddr ip6-allrouters to_ex { }]
15:13:43.237082 IP6 (hlim 1, next-header Options (0) payload length: 96) fe80::da58:d7ff:fe00:2098 > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 4 group record(s) [gaddr ff02::1:ff00:0 to_ex { }] [gaddr ff02::1:ff00:2098 to_ex { }] [gaddr ff05::2 to_ex { }] [gaddr ip6-allrouters to_ex { }]
15:13:43.352542 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff88:9b6f: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:7dbd:c23a:4188:9b6f
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
15:13:43.480749 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff00:2e: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14::2e
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
15:13:44.386693 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff88:9b6f: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:7dbd:c23a:4188:9b6f
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
15:13:44.515339 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff00:2e: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14::2e
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
15:13:45.484366 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff88:9b6f: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:7dbd:c23a:4188:9b6f
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
15:13:46.728045 IP6 (class 0xe0, hlim 1, next-header UDP (17) payload length: 162) fe80::5a11:22ff:fe33:f5f9.dhcpv6-client > ff02::1:2.dhcpv6-server: [udp sum ok] dhcp6 relay-fwd (linkaddr=:: peeraddr=fe80::5a11:22ff:fe33:f5f9 (relay-message (dhcp6 request (xid=dc711f (elapsed-time 3157) (option-request DNS-server DNS-search-list opt_82) (client-ID hwaddr type 1 58112233f5f8) (server-ID hwaddr/time type 1 time 708449505 8a9a8c6cf4de) (IA_NA IAID:1 T1:0 T2:0 (IA_ADDR 2a02:168:2000:14::25f pltime:3000 vltime:4000)))) (interface-ID 73342e373930686f6e5f...))
15:13:47.352170 IP6 (hlim 1, next-header UDP (17) payload length: 130) fe80::20d:b9ff:fe35:87a8.5678 > ip6-allnodes.5678: [udp sum ok] UDP, length 122
15:13:47.668174 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ffd3:7a53: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:dd17:9166:85d3:7a53
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
15:13:48.767884 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ffd3:7a53: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:dd17:9166:85d3:7a53
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
15:13:49.188549 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 104) fe80::200:f7ff:fef7:256 > ip6-allnodes: [icmp6 sum ok] ICMP6, router advertisement, length 104
	hop limit 64, Flags [managed, other stateful], pref high, router lifetime 1800s, reachable time 0ms, retrans timer 0ms
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
	  mtu option (5), length 8 (1):  1500
	    0x0000:  0000 0000 05dc
	  rdnss option (25), length 40 (5):  lifetime 30s, addr: ns10.init7.net addr: ns20.init7.net
	    0x0000:  0101 0000 001e 2001 1620 2777 0001 0000
	    0x0010:  0000 0000 0010 2001 1620 2777 0002 0000
	    0x0020:  0000 0000 0020
	  prefix info option (3), length 32 (4): 2a02:168:2000:14::/64, Flags [onlink, auto], valid time 2592000s, pref. time 604800s
	    0x0000:  40c0 0027 8d00 0009 3a80 0000 0000 2a02
	    0x0010:  0168 2000 0014 0000 0000 0000 0000

c-po · March 16, 2025, 7:38pm

I just tried it on my side:

Start tcpdump using: tcpdump -i pppoe0 -n -vv '(udp port 546 or 547) or icmp6'

Now you can sudo systemctl restart [email protected] which should re-negotiate your IPv6 DHCPv6 parameters. 2003:ec:xx00:xx00::/56 is the prefix I got assigned.

tcpdump: listening on pppoe0, link-type LINUX_SLL (Linux cooked v1), snapshot length 262144 bytes
20:35:47.338802 IP6 (flowlabel 0xab5f9, hlim 1, next-header UDP (17) payload length: 85) fe80::f5a4:85ff:fefc:70d7.546 > ff02::1:2.547: [udp sum ok] dhcp6 solicit (xid=33dc7d (client-ID type 4) (elapsed-time 0) (IA_PD IAID:0 T1:0 T2:0 (IA_PD-prefix ::/56 pltime:4294967295 vltime:4294967295)))
20:35:47.541334 IP6 (class 0xc0, hlim 64, next-header UDP (17) payload length: 109) fe80::f6cc:55ff:fe89:ea43.547 > fe80::f5a4:85ff:fefc:70d7.546: [udp sum ok] dhcp6 advertise (xid=33dc7d (client-ID type 4) (server-ID vid 0000058366343a63) (IA_PD IAID:0 T1:43200 T2:69120 (IA_PD-prefix 2003:ec:xx00:xx00::/56 pltime:86400 vltime:86400)))
20:35:48.340614 IP6 (flowlabel 0xab5f9, hlim 1, next-header UDP (17) payload length: 115) fe80::f5a4:85ff:fefc:70d7.546 > ff02::1:2.547: [udp sum ok] dhcp6 request (xid=756c06 (client-ID type 4) (server-ID vid 0000058366343a63) (elapsed-time 0) (IA_PD IAID:0 T1:0 T2:0 (IA_PD-prefix 2003:ec:xx00:xx00::/56 pltime:86400 vltime:86400)))
20:35:48.519891 IP6 (class 0xc0, hlim 64, next-header UDP (17) payload length: 109) fe80::f6cc:55ff:fe89:ea43.547 > fe80::f5a4:85ff:fefc:70d7.546: [udp sum ok] dhcp6 reply (xid=756c06 (client-ID type 4) (server-ID vid 0000058366343a63) (IA_PD IAID:0 T1:43200 T2:69120 (IA_PD-prefix 2003:ec:xx00:xx00::/56 pltime:86400 vltime:86400)))

Please also share the contents of /run/dhcp6c/dhcp6c.pppoe0.conf

the_jackal777 · March 16, 2025, 8:02pm

Many thanks, I did execute sudo systemctl restart [email protected]

The content of this file: /run/dhcp6c/dhcp6c.eth0.conf is the following:

## Autogenerated by interface.py ###                                                                     
                                                                                                          
# man https://www.unix.com/man-page/debian/5/dhcp6c.conf/                                                 
interface eth0 {                                                                                          
    send ia-pd 0; # prefix delegation #0                                                                  
    script "/etc/wide-dhcpv6/dhcp6c.eth0.script";                                                         
};                                                                                                        
                                                                                                          
                                                                                                          
id-assoc pd 0 {                                                                                           
    prefix ::/48 infinity;                                                                                
    prefix-interface eth1 {                                                                               
        sla-len 16;                                                                                       
        sla-id 1;                                                                                         
        ifid 1;                                                                                           
    };                                                                                                    
};

tcpdump as per below:

vyos@vyos# tcpdump -i eth0 -n -vv '(udp port 546 or 547) or icmp6'
tcpdump: listening on eth0, link-type EN10MB (Ethernet), snapshot length 262144 bytes
17:14:37.086953 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff00:44: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14::44
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:14:37.851096 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 104) fe80::200:f7ff:fef7:256 > ff02::1: [icmp6 sum ok] ICMP6, router advertisement, length 104
	hop limit 64, Flags [managed, other stateful], pref high, router lifetime 1800s, reachable time 0ms, retrans timer 0ms
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
	  mtu option (5), length 8 (1):  1500
	    0x0000:  0000 0000 05dc
	  rdnss option (25), length 40 (5):  lifetime 30s, addr: 2001:1620:2777:1::10 addr: 2001:1620:2777:2::20
	    0x0000:  0101 0000 001e 2001 1620 2777 0001 0000
	    0x0010:  0000 0000 0010 2001 1620 2777 0002 0000
	    0x0020:  0000 0000 0020
	  prefix info option (3), length 32 (4): 2a02:168:2000:14::/64, Flags [onlink, auto], valid time 2592000s, pref. time 604800s
	    0x0000:  40c0 0027 8d00 0009 3a80 0000 0000 2a02
	    0x0010:  0168 2000 0014 0000 0000 0000 0000
17:14:40.698772 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff61:77a4: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:b93d:cc04:aa61:77a4
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:14:41.726296 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff61:77a4: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:b93d:cc04:aa61:77a4
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:14:42.542626 IP6 (class 0xe0, hlim 1, next-header UDP (17) payload length: 162) fe80::5a11:22ff:fe33:f5f9.546 > ff02::1:2.547: [udp sum ok] dhcp6 relay-fwd (linkaddr=:: peeraddr=fe80::5a11:22ff:fe33:f5f9 (relay-message (dhcp6 request (xid=c27a83 (elapsed-time 2993) (option-request DNS-server DNS-search-list opt_82) (client-ID hwaddr type 1 58112233f5f8) (server-ID hwaddr/time type 1 time 708449505 8a9a8c6cf4de) (IA_NA IAID:1 T1:0 T2:0 (IA_ADDR 2a02:168:2000:14::25f pltime:3000 vltime:4000)))) (interface-ID 73342e373930686f6e5f...))
17:14:42.790906 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff61:77a4: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:b93d:cc04:aa61:77a4
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:14:43.059206 IP6 (class 0xe0, hlim 1, next-header UDP (17) payload length: 163) fe80::d63d:f3ff:fe99:4268.546 > ff02::1:2.547: [udp sum ok] dhcp6 relay-fwd (linkaddr=:: peeraddr=fe80::d63d:f3ff:fe99:4268 (relay-message (dhcp6 renew (xid=7634c (client-ID hwaddr type 1 d43df3994268) (server-ID hwaddr/time type 1 time 708449505 8a9a8c6cf4de) (reconfigure-accept) (elapsed-time 0) (option-request DNS-server) (IA_PD IAID:4086907521 T1:1000 T2:2000 (IA_PD-prefix 2a02:168:681f::/48 pltime:3000 vltime:4000)))) (interface-ID 73332e373930686f6e5f...))
17:14:44.019898 IP6 (class 0xe0, hlim 1, next-header UDP (17) payload length: 163) fe80::5e64:8eff:feab:5640.546 > ff02::1:2.547: [udp sum ok] dhcp6 relay-fwd (linkaddr=:: peeraddr=fe80::5e64:8eff:feab:5640 (relay-message (dhcp6 renew (xid=b4e07 (client-ID hwaddr type 1 5c648eab5640) (server-ID hwaddr/time type 1 time 708449505 a209da24f4bf) (reconfigure-accept) (elapsed-time 0) (option-request DNS-server) (IA_PD IAID:2393593433 T1:1000 T2:2000 (IA_PD-prefix 2a02:168:69bb::/48 pltime:3000 vltime:4000)))) (interface-ID 73322e373930686f6e5f...))
17:14:45.080477 IP6 (class 0xe0, hlim 1, next-header UDP (17) payload length: 162) fe80::d63d:f3ff:fe99:4268.546 > ff02::1:2.547: [udp sum ok] dhcp6 relay-fwd (linkaddr=:: peeraddr=fe80::d63d:f3ff:fe99:4268 (relay-message (dhcp6 renew (xid=7b7a46 (client-ID hwaddr type 1 d43df3994268) (server-ID hwaddr/time type 1 time 708449505 8a9a8c6cf4de) (reconfigure-accept) (IA_NA IAID:4086907500 T1:1000 T2:2000 (IA_ADDR 2a02:168:2000:14::838 pltime:3000 vltime:4000)) (elapsed-time 0) (option-request DNS-server))) (interface-ID 73332e373930686f6e5f...))
17:14:45.866902 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff00:3e: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14::3e
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:14:46.038222 IP6 (class 0xe0, hlim 1, next-header UDP (17) payload length: 162) fe80::5e64:8eff:feab:5640.546 > ff02::1:2.547: [udp sum ok] dhcp6 relay-fwd (linkaddr=:: peeraddr=fe80::5e64:8eff:feab:5640 (relay-message (dhcp6 renew (xid=aa9ce3 (client-ID hwaddr type 1 5c648eab5640) (server-ID hwaddr/time type 1 time 708449505 a209da24f4bf) (reconfigure-accept) (IA_NA IAID:2393593412 T1:1000 T2:2000 (IA_ADDR 2a02:168:2000:14::a8 pltime:3000 vltime:4000)) (elapsed-time 0) (option-request DNS-server))) (interface-ID 73322e373930686f6e5f...))
17:14:46.103392 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 104) fe80::200:f7ff:fef7:256 > ff02::1: [icmp6 sum ok] ICMP6, router advertisement, length 104
	hop limit 64, Flags [managed, other stateful], pref high, router lifetime 1800s, reachable time 0ms, retrans timer 0ms
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
	  mtu option (5), length 8 (1):  1500
	    0x0000:  0000 0000 05dc
	  rdnss option (25), length 40 (5):  lifetime 30s, addr: 2001:1620:2777:1::10 addr: 2001:1620:2777:2::20
	    0x0000:  0101 0000 001e 2001 1620 2777 0001 0000
	    0x0010:  0000 0000 0010 2001 1620 2777 0002 0000
	    0x0020:  0000 0000 0020
	  prefix info option (3), length 32 (4): 2a02:168:2000:14::/64, Flags [onlink, auto], valid time 2592000s, pref. time 604800s
	    0x0000:  40c0 0027 8d00 0009 3a80 0000 0000 2a02
	    0x0010:  0168 2000 0014 0000 0000 0000 0000
17:14:46.954514 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff00:3e: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14::3e
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:14:47.386545 IP6 (class 0xe0, hlim 1, next-header UDP (17) payload length: 164) fe80::f287:56ff:fe05:7238.546 > ff02::1:2.547: [udp sum ok] dhcp6 relay-fwd (linkaddr=:: peeraddr=fe80::f287:56ff:fe05:7238 (relay-message (dhcp6 renew (xid=9c10ac (client-ID hwaddr type 1 f08756057238) (server-ID hwaddr/time type 1 time 708449505 8a9a8c6cf4de) (reconfigure-accept) (IA_NA IAID:1443197500 T1:1000 T2:2000 (IA_ADDR 2a02:168:2000:14::57 pltime:3000 vltime:4000)) (elapsed-time 0) (option-request DNS-server opt_95))) (interface-ID 73342e373930686f6e5f...))
17:14:47.386545 IP6 (class 0xe0, hlim 1, next-header UDP (17) payload length: 165) fe80::f287:56ff:fe05:7238.546 > ff02::1:2.547: [udp sum ok] dhcp6 relay-fwd (linkaddr=:: peeraddr=fe80::f287:56ff:fe05:7238 (relay-message (dhcp6 renew (xid=55596c (client-ID hwaddr type 1 f08756057238) (server-ID hwaddr/time type 1 time 708449505 8a9a8c6cf4de) (reconfigure-accept) (elapsed-time 0) (option-request DNS-server opt_95) (IA_PD IAID:1443197521 T1:1000 T2:2000 (IA_PD-prefix 2a02:168:6945::/48 pltime:3000 vltime:4000)))) (interface-ID 73342e373930686f6e5f...))
17:14:47.997651 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff00:3e: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14::3e
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:14:49.079034 IP6 (class 0xe0, hlim 1, next-header UDP (17) payload length: 163) fe80::ee3e:b3ff:fe5f:46d.546 > ff02::1:2.547: [udp sum ok] dhcp6 relay-fwd (linkaddr=:: peeraddr=fe80::ee3e:b3ff:fe5f:46d (relay-message (dhcp6 renew (xid=6e55bc (client-ID hwaddr type 1 ec3eb35f046d) (server-ID hwaddr/time type 1 time 708449505 8a9a8c6cf4de) (reconfigure-accept) (elapsed-time 0) (option-request DNS-server) (IA_PD IAID:3009348742 T1:1000 T2:2000 (IA_PD-prefix 2a02:168:68e0::/48 pltime:3000 vltime:4000)))) (interface-ID 73362e373930686f6e5f...))
17:14:50.717360 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff61:77a4: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:b93d:cc04:aa61:77a4
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:14:51.632060 IP6 (class 0xe0, hlim 1, next-header UDP (17) payload length: 162) fe80::5e64:8eff:feab:80ac.546 > ff02::1:2.547: [udp sum ok] dhcp6 relay-fwd (linkaddr=:: peeraddr=fe80::5e64:8eff:feab:80ac (relay-message (dhcp6 renew (xid=89d178 (client-ID hwaddr type 1 5c648eab80ac) (server-ID hwaddr/time type 1 time 708449505 8a9a8c6cf4de) (reconfigure-accept) (IA_NA IAID:2393604272 T1:1000 T2:2000 (IA_ADDR 2a02:168:2000:14::ac pltime:3000 vltime:4000)) (elapsed-time 0) (option-request DNS-server))) (interface-ID 73332e373930686f6e5f...))
17:14:51.632113 IP6 (class 0xe0, hlim 1, next-header UDP (17) payload length: 163) fe80::5e64:8eff:feab:80ac.546 > ff02::1:2.547: [udp sum ok] dhcp6 relay-fwd (linkaddr=:: peeraddr=fe80::5e64:8eff:feab:80ac (relay-message (dhcp6 renew (xid=bdd2a (client-ID hwaddr type 1 5c648eab80ac) (server-ID hwaddr/time type 1 time 708449505 8a9a8c6cf4de) (reconfigure-accept) (elapsed-time 0) (option-request DNS-server) (IA_PD IAID:2393604293 T1:1000 T2:2000 (IA_PD-prefix 2a02:168:6985::/48 pltime:3000 vltime:4000)))) (interface-ID 73332e373930686f6e5f...))
17:14:51.640882 IP6 (class 0xe0, hlim 1, next-header UDP (17) payload length: 162) fe80::52e0:39ff:fe2e:eaef.546 > ff02::1:2.547: [udp sum ok] dhcp6 relay-fwd (linkaddr=:: peeraddr=fe80::52e0:39ff:fe2e:eaef (relay-message (dhcp6 renew (xid=4b48d (client-ID hwaddr type 1 50e0392eeaef) (server-ID hwaddr/time type 1 time 708449505 8a9a8c6cf4de) (reconfigure-accept) (IA_NA IAID:959376115 T1:1000 T2:2000 (IA_ADDR 2a02:168:2000:14::22 pltime:3000 vltime:4000)) (elapsed-time 0) (option-request DNS-server))) (interface-ID 73322e373930686f6e5f...))
17:14:51.640936 IP6 (class 0xe0, hlim 1, next-header UDP (17) payload length: 163) fe80::52e0:39ff:fe2e:eaef.546 > ff02::1:2.547: [udp sum ok] dhcp6 relay-fwd (linkaddr=:: peeraddr=fe80::52e0:39ff:fe2e:eaef (relay-message (dhcp6 renew (xid=b86f76 (client-ID hwaddr type 1 50e0392eeaef) (server-ID hwaddr/time type 1 time 708449505 8a9a8c6cf4de) (reconfigure-accept) (elapsed-time 0) (option-request DNS-server) (IA_PD IAID:959376136 T1:1000 T2:2000 (IA_PD-prefix 2a02:168:69a4::/48 pltime:3000 vltime:4000)))) (interface-ID 73322e373930686f6e5f...))
17:14:51.721864 IP6 (class 0xe0, hlim 1, next-header UDP (17) payload length: 197) fe80::eea:14ff:fe75:c407.546 > ff02::1:2.547: [udp sum ok] dhcp6 relay-fwd (linkaddr=:: peeraddr=fe80::eea:14ff:fe75:c407 (relay-message (dhcp6 renew (xid=f9d771 (elapsed-time 0) (option-request SIP-servers-domain SIP-servers-address DNS-server DNS-search-list SNTP-servers NTP-server AFTR-Name opt_67) (client-ID hwaddr type 1 0cea1475c407) (server-ID hwaddr/time type 1 time 708449505 8a9a8c6cf4de) (Client-FQDN) (IA_PD IAID:1 T1:0 T2:0 (IA_PD-prefix 2a02:168:681d::/48 pltime:0 vltime:0)))) (interface-ID 73322e373930686f6e5f...))
17:14:51.781215 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff61:77a4: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:b93d:cc04:aa61:77a4
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:14:52.876799 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff61:77a4: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:b93d:cc04:aa61:77a4
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:14:53.781609 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 104) fe80::200:f7ff:fef7:256 > ff02::1: [icmp6 sum ok] ICMP6, router advertisement, length 104
	hop limit 64, Flags [managed, other stateful], pref high, router lifetime 1800s, reachable time 0ms, retrans timer 0ms
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
	  mtu option (5), length 8 (1):  1500
	    0x0000:  0000 0000 05dc
	  rdnss option (25), length 40 (5):  lifetime 30s, addr: 2001:1620:2777:1::10 addr: 2001:1620:2777:2::20
	    0x0000:  0101 0000 001e 2001 1620 2777 0001 0000
	    0x0010:  0000 0000 0010 2001 1620 2777 0002 0000
	    0x0020:  0000 0000 0020
	  prefix info option (3), length 32 (4): 2a02:168:2000:14::/64, Flags [onlink, auto], valid time 2592000s, pref. time 604800s
	    0x0000:  40c0 0027 8d00 0009 3a80 0000 0000 2a02
	    0x0010:  0168 2000 0014 0000 0000 0000 0000
17:14:54.123259 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff61:77a4: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:b93d:cc04:aa61:77a4
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:14:55.180953 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff61:77a4: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:b93d:cc04:aa61:77a4
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:14:56.293539 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff61:77a4: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:b93d:cc04:aa61:77a4
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:14:57.726333 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff61:77a4: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:b93d:cc04:aa61:77a4
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:14:58.759425 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff61:77a4: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:b93d:cc04:aa61:77a4
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:14:58.889123 IP6 (class 0xe0, hlim 1, next-header UDP (17) payload length: 162) fe80::52e0:39ff:fe2e:f082.546 > ff02::1:2.547: [udp sum ok] dhcp6 relay-fwd (linkaddr=:: peeraddr=fe80::52e0:39ff:fe2e:f082 (relay-message (dhcp6 renew (xid=51b33c (client-ID hwaddr type 1 50e0392ef082) (server-ID hwaddr/time type 1 time 708449505 8a9a8c6cf4de) (reconfigure-accept) (IA_NA IAID:959377542 T1:1000 T2:2000 (IA_ADDR 2a02:168:2000:14::1da pltime:3000 vltime:4000)) (elapsed-time 0) (option-request DNS-server))) (interface-ID 73362e373930686f6e5f...))
17:14:58.889171 IP6 (class 0xe0, hlim 1, next-header UDP (17) payload length: 163) fe80::52e0:39ff:fe2e:f082.546 > ff02::1:2.547: [udp sum ok] dhcp6 relay-fwd (linkaddr=:: peeraddr=fe80::52e0:39ff:fe2e:f082 (relay-message (dhcp6 renew (xid=287d71 (client-ID hwaddr type 1 50e0392ef082) (server-ID hwaddr/time type 1 time 708449505 8a9a8c6cf4de) (reconfigure-accept) (elapsed-time 0) (option-request DNS-server) (IA_PD IAID:959377563 T1:1000 T2:2000 (IA_PD-prefix 2a02:168:68e4::/48 pltime:3000 vltime:4000)))) (interface-ID 73362e373930686f6e5f...))
17:14:59.872107 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff61:77a4: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:b93d:cc04:aa61:77a4
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:15:03.735700 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 104) fe80::200:f7ff:fef7:256 > ff02::1: [icmp6 sum ok] ICMP6, router advertisement, length 104
	hop limit 64, Flags [managed, other stateful], pref high, router lifetime 1800s, reachable time 0ms, retrans timer 0ms
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
	  mtu option (5), length 8 (1):  1500
	    0x0000:  0000 0000 05dc
	  rdnss option (25), length 40 (5):  lifetime 30s, addr: 2001:1620:2777:1::10 addr: 2001:1620:2777:2::20
	    0x0000:  012f 0000 001e 2001 1620 2777 0001 0000
	    0x0010:  0000 0000 0010 2001 1620 2777 0002 0000
	    0x0020:  0000 0000 0020
	  prefix info option (3), length 32 (4): 2a02:168:2000:14::/64, Flags [onlink, auto], valid time 2592000s, pref. time 604800s
	    0x0000:  40c0 0027 8d00 0009 3a80 0000 0000 2a02
	    0x0010:  0168 2000 0014 0000 0000 0000 0000
17:15:04.225912 IP6 (class 0xe0, hlim 1, next-header UDP (17) payload length: 158) fe80::7a9a:18ff:fee6:6b10.546 > ff02::1:2.547: [udp sum ok] dhcp6 relay-fwd (linkaddr=:: peeraddr=fe80::7a9a:18ff:fee6:6b10 (relay-message (dhcp6 renew (xid=bd8121 (client-ID hwaddr type 1 789a18e66b08) (server-ID hwaddr/time type 1 time 708449505 a209da24f4bf) (option-request DNS-server) (elapsed-time 0) (IA_PD IAID:9 T1:0 T2:0 (IA_PD-prefix 2a02:168:693e::/48 pltime:0 vltime:0)))) (interface-ID 73352e373930686f6e5f...))
17:15:06.448806 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff61:77a4: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:b93d:cc04:aa61:77a4
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:15:07.537244 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff61:77a4: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:b93d:cc04:aa61:77a4
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:15:08.625452 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff61:77a4: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:b93d:cc04:aa61:77a4
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:15:08.899606 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff00:1e: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14::1e
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:15:09.199619 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff90:9490: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:1cf1:e9fd:e690:9490
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:15:09.890905 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff61:77a4: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:b93d:cc04:aa61:77a4
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:15:10.290719 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff90:9490: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:1cf1:e9fd:e690:9490
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:15:10.914030 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff61:77a4: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:b93d:cc04:aa61:77a4
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:15:11.313875 IP6 (class 0xe0, hlim 1, next-header UDP (17) payload length: 236) fe80::da58:d7ff:fe01:1ba4.546 > ff02::1:2.547: [udp sum ok] dhcp6 relay-fwd (linkaddr=:: peeraddr=fe80::da58:d7ff:fe01:1ba4 (relay-message (dhcp6 renew (xid=7dee78 (elapsed-time 0) (option-request SIP-servers-domain SIP-servers-address DNS-server DNS-search-list SNTP-servers NTP-server AFTR-Name opt_67 opt_94 opt_95 opt_96) (client-ID hwaddr type 1 d858d7011ba4) (server-ID hwaddr/time type 1 time 708449505 a209da24f4bf) (Client-FQDN) (IA_NA IAID:1 T1:0 T2:0 (IA_ADDR 2a02:168:2000:14::68c pltime:0 vltime:0)) (IA_PD IAID:1 T1:0 T2:0 (IA_PD-prefix 2a02:168:68f9::/48 pltime:0 vltime:0)))) (interface-ID 73362e373930686f6e5f...))
17:15:11.361314 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff90:9490: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:1cf1:e9fd:e690:9490
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:15:11.946893 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff61:77a4: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:b93d:cc04:aa61:77a4
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:15:12.549795 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff90:9490: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:1cf1:e9fd:e690:9490
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:15:13.393624 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 104) fe80::200:f7ff:fef7:256 > ff02::1: [icmp6 sum ok] ICMP6, router advertisement, length 104
	hop limit 64, Flags [managed, other stateful], pref high, router lifetime 1800s, reachable time 0ms, retrans timer 0ms
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
	  mtu option (5), length 8 (1):  1500
	    0x0000:  0000 0000 05dc
	  rdnss option (25), length 40 (5):  lifetime 30s, addr: 2001:1620:2777:1::10 addr: 2001:1620:2777:2::20
	    0x0000:  0101 0000 001e 2001 1620 2777 0001 0000
	    0x0010:  0000 0000 0010 2001 1620 2777 0002 0000
	    0x0020:  0000 0000 0020
	  prefix info option (3), length 32 (4): 2a02:168:2000:14::/64, Flags [onlink, auto], valid time 2592000s, pref. time 604800s
	    0x0000:  40c0 0027 8d00 0009 3a80 0000 0000 2a02
	    0x0010:  0168 2000 0014 0000 0000 0000 0000
17:15:13.596627 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff90:9490: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:1cf1:e9fd:e690:9490
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:15:13.639003 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff00:44: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14::44
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:15:14.263798 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff61:77a4: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:b93d:cc04:aa61:77a4
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:15:14.638509 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff90:9490: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:1cf1:e9fd:e690:9490
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:15:14.701609 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff00:44: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14::44
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:15:15.356537 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff61:77a4: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:b93d:cc04:aa61:77a4
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:15:15.362506 IP6 (class 0xe0, hlim 1, next-header UDP (17) payload length: 162) fe80::5a11:22ff:fe33:f5f9.546 > ff02::1:2.547: [udp sum ok] dhcp6 relay-fwd (linkaddr=:: peeraddr=fe80::5a11:22ff:fe33:f5f9 (relay-message (dhcp6 request (xid=c27a83 (elapsed-time 6275) (option-request DNS-server DNS-search-list opt_82) (client-ID hwaddr type 1 58112233f5f8) (server-ID hwaddr/time type 1 time 708449505 8a9a8c6cf4de) (IA_NA IAID:1 T1:0 T2:0 (IA_ADDR 2a02:168:2000:14::25f pltime:3000 vltime:4000)))) (interface-ID 73342e373930686f6e5f...))
17:15:15.762056 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff00:44: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14::44
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:15:16.293567 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff90:9490: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:1cf1:e9fd:e690:9490
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:15:16.411841 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff61:77a4: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:b93d:cc04:aa61:77a4
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:15:17.345000 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff90:9490: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:1cf1:e9fd:e690:9490
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:15:17.522875 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff61:77a4: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:b93d:cc04:aa61:77a4
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:15:18.382870 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff90:9490: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:1cf1:e9fd:e690:9490
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:15:18.552540 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff00:44: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14::44
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:15:18.616684 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff61:77a4: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:b93d:cc04:aa61:77a4
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:15:19.625729 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff00:44: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14::44
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:15:19.689897 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff61:77a4: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14:b93d:cc04:aa61:77a4
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:15:20.744365 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:f7ff:fef7:256 > ff02::1:ff00:44: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2a02:168:2000:14::44
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
17:15:21.107903 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 104) fe80::200:f7ff:fef7:256 > ff02::1: [icmp6 sum ok] ICMP6, router advertisement, length 104
	hop limit 64, Flags [managed, other stateful], pref high, router lifetime 1800s, reachable time 0ms, retrans timer 0ms
	  source link-address option (1), length 8 (1): 00:00:f7:f7:02:56
	    0x0000:  0000 f7f7 0256
	  mtu option (5), length 8 (1):  1500
	    0x0000:  0000 0000 05dc
	  rdnss option (25), length 40 (5):  lifetime 30s, addr: 2001:1620:2777:1::10 addr: 2001:1620:2777:2::20

zentec · March 18, 2025, 11:57am

One thing I saw in your attached config is that it lacks a declared service for router advertisements needed for slaac.

router-advert {
     interface eth1.3 {
         default-lifetime 300
         default-preference high
         hop-limit 64
         interval {
             max 30
         }
         link-mtu 1500
         prefix ::/64 {
             preferred-lifetime 300
             valid-lifetime 900
         }
     }
}