BGP - Not advertising routes?



Hi everyone!

I use VyOS on a VPS and they have provided me with BGP information and credentials. I have an IPv6 block I am trying to advertise over BGP however it does not appear to be working.

See the information from Vultr here:

My configuration is as follows (cut to just a few configuration nodes):

interfaces {
    ethernet eth0 {
        address 2001:19f0:7402:XXXX:XXXX:XXXX:XXXX:XXXX/64
        duplex auto
        ipv6 {
            address {
            dup-addr-detect-transmits 1
        smp_affinity auto
        speed auto

protocols {
    bgp 6**** {
        address-family {
            ipv6-unicast {
                network MY:LOVELY:V6:BLOCK::/64 {
        neighbor 2001:19f0:ffff::1 {
            ebgp-multihop 2
            password ****************
            remote-as 64515
            update-source eth0
        parameters {

I can ping the IP address Vultr told me to use for BGP, and I get the following information by checking BGP’s status:

vyos@rt-edge-dc-vult-1:~$ show ipv6 bgp summary
No IPv6 neighbor is configured

vyos@rt-edge-dc-vult-1:~$ show ipv6 bgp neighbors
BGP neighbor is 2001:19f0:ffff::1, remote AS 64515, local AS 6****, external link
  BGP version 4, remote router ID
  BGP state = Connect
  Last read 1d03h02m, hold time is 180, keepalive interval is 60 seconds
  Message statistics:
    Inq depth is 0
    Outq depth is 0
                         Sent       Rcvd
    Opens:                  0          0
    Notifications:          0          0
    Updates:                0          0
    Keepalives:             0          0
    Route Refresh:          0          0
    Capability:             0          0
    Total:                  0          0
  Minimum time between advertisement runs is 30 seconds
  Update source is eth0

 For address family: IPv4 Unicast
  Community attribute sent to this neighbor(both)
  0 accepted prefixes

  Connections established 0; dropped 0
  Last reset never
  External BGP neighbor may be up to 2 hops away.
Next connect timer due in 30 seconds
Read thread: off  Write thread: on

vyos@rt-edge-dc-vult-1:~$ show ipv6 bgp neighbors

vyos@rt-edge-dc-vult-1:~$ show ipv6 bgp neighbors 2001:19f0:ffff::1 advertised-routes
% No such neighbor or address family

Can anyone advise me with this?



The Connect state means that the TCP connection with the peer failed to establish. You may want to check if ebgp-multipath 2 is really sufficient, check your firewall, or look into the traffic dump (TCP/179) to see what’s going on.


A trace to the neighbor IP gives me just one hop. My firewall is disabled temporarily. I’m not sure how to traffic dump.


We have both tcpdump and tshark in the image, whichever you prefer.
There’s also a CLI wrapper, “run monitor interfaces ethernet eth0 traffic”, but I never use it myself.


After doing some dumps, it turns out that when I use the password in my config it fails to establish a connection. When I don’t use the password, it gets to “Active”, but never “Established”.

I tried upgrading to v1.2 (rolling) from 1.8 (stable), and although with password I got Active, my VPN broke so I had to revert.


Do you have logs of how exactly the VPN broke?


I would set the update source to the actual IPv6 address on eth0 (2001:19f0:7402:XXXX:XXXX:XXXX:XXXX:XXXX/64)

What does show ipv6 bgp summary show?


Hi everyone,

Thanks for your help however the project has been aborted because even with an upgrade to the latest VyOS, BGP with Vultr did not work.

I have recently purchased my own ASN and v6 space, so I will try to peer in the near future with other providers and see what comes of that.

Again, thank you for the support.


I know this is an ancient post but I think you forgot to configure RA for eth0.

You had to set net.ipv6.conf.eth0.accept_ra to 2.

I’ve got multiple VyOS VMs at Vultr.