Hello fellow bird users, with bird 2.0.12 I am currently getting an "Socket: Permission denied" error messages when trying to establish a specific IPv6 iBGP session. The funny thing is that another connection works perfectly. The BGP block that fails is: -------------------------------------------------------------------------------- protocol bgp serverXX { local as xx; neighbor 2a0a:...::44 as xx; direct; ipv6 { import all; export all; }; ipv4 { import all; export all; }; } -------------------------------------------------------------------------------- Resulting into: bird> show protocols all serverXX Name Proto Table State Since Info serverXX BGP --- start 12:18:52.466 Active Socket: Permission denied BGP state: Active Neighbor address: 2a0a:..::44 Neighbor AS: xx Local AS: xx Connect delay: 2.961/5 Last error: Socket: Permission denied Channel ipv6 State: DOWN Table: master6 Preference: 100 Input filter: ACCEPT Output filter: ACCEPT Channel ipv4 State: DOWN Table: master4 Preference: 100 Input filter: ACCEPT Output filter: ACCEPT -------------------------------------------------------------------------------- An almost identical iBGP session is established without problems: -------------------------------------------------------------------------------- protocol bgp routerZZ { local as xx; neighbor 2a0a:..::6 as xx; direct; ipv6 { import all; export all; }; ipv4 { import all; export all; }; } -------------------------------------------------------------------------------- Obviously the IPs are different, but I am really puzzled at to what causes this. It's bird 2.0.12 running on Linux, iptables/ip6tables are not having any rules. Interestingly the peer on the other side has exactly the same error. Does anyone have a hint on what might be wrong here? Best regards, Nico -- Sustainable and modern Infrastructures by ungleich.ch