this is very similar to https://phabricator.vyos.net/T3657 , so it seems that this is going to be fixed in 1.4 ( proof https://forum.vyos.io/t/bgp-peering-with-ipv6-link-local-addresses/7309/14 ). Is this going to be backported to 1.3 ? Anyone is able to find the commit that introduced the feature on 1.4? Maybe it is something easy to patch