Configurate Dynamic DNS for dynv6

General questions
1

I made the configuration of Dynamic DNS as per the spec in dynv6.com as below:
vyos@vyos# show service dns dynamic
name DDNS-dynv6 {
address {
interface eth0
}
host-name zionpath.eion.design
ip-version ipv6
password xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
protocol dyndns2
server dynv6.com
username none
}
But looks not working properly, IP status is noconnect.
vyos@vyos:~$ show dns dynamic status
Hostname IPv4 address IPv4 status IPv6 address IPv6 status Last update

zionpath.eion.design noconnect noconnect 1970-01-01 08:00:00

Would someone can review my configuration to see if anything I missed or incorrect?

My Vyos version is 1.5-rolling-202412160007 and interface configuration as below:
vyos@vyos:~$ show int eth
Codes: S - State, L - Link, u - Up, D - Down, A - Admin Down
Interface IP Address S/L Description

eth0 192.168.100.106/24 u/u WAN0
2409:8a1e:70dd:9a90::3/128
eth1 - u/D WAN1
eth2 2409:8a1e:70dd:9a91::f000/64 u/D DMZ
eth3 192.168.200.250/24 u/u LAN
fd00::f000/112

Thanks in advance.

2

Hello @Nicolas.Li,

I resurrected a test dynv6 account to test it. Looks like, the following configuration works for me:

vyos@test-1218# show service dns dynamic name dynv6  
address {
    interface eth3
}
host-name myhost.dynv6.net
ip-version both
password xxxxx
protocol dyndns2
server dynv6.com
username none

vyos@test-1218# run show dns dynamic status
Hostname                 IPv4 address    IPv4 status    IPv6 address                           IPv6 status    Last update
-----------------------  --------------  -------------  -------------------------------------  -------------  -------------------
myhost.dynv6.net         11.222.333.444  good           2001:...:...:...                       good           2024-12-18 23:47:19

Could you please take a look at the log to see if anything abnormal shows up? You can try something like show log dns dynamic or monitor log dns dynamic.

Thanks!

3

I think this hostname is incorrect

4

Thanks a lot!
it’s strange to me.

I deleted ddclient.cache and restart dns dynamic, then I got log below, please help to review it.
vyos@vyos:~$ show log dns dynamic
Dec 19 16:06:32 systemd[1]: Starting ddclient.service - Update dynamic domain name service entries…
Dec 19 16:06:32 systemd[1]: Started ddclient.service - Update dynamic domain name service entries.
Dec 19 16:42:51 systemd[1]: Stopping ddclient.service - Update dynamic domain name service entries…
Dec 19 16:42:51 systemd[1]: ddclient.service: Deactivated successfully.
Dec 19 16:42:51 systemd[1]: Stopped ddclient.service - Update dynamic domain name service entries.
Dec 19 16:42:51 systemd[1]: Starting ddclient.service - Update dynamic domain name service entries…
Dec 19 16:42:51 systemd[1]: Started ddclient.service - Update dynamic domain name service entries.
Dec 19 16:42:51 ddclient[5031]: WARNING: curl cannot connect to https://dynv6.com using IPv0
Dec 19 16:42:51 ddclient[5032]: FAILED: updating zionpath.eion.design: Could not connect to dynv6.com.
vyos@vyos:~$

5

further checked and identified it’s a DNS issue.
set system name-server 8.8.8.8 makes the issue resolved.

Thanks all

2 Likes
6

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