Hi, On mer. 19 juin 09:10:53 2019, Robert Sander wrote: > Hi, > > our routers run on Debian stretch with bird 1.6.4 from > bird.network.cz/debian. > > Yesterday I tried kernel 4.19 from backports.debian.org and ran into a > weird issue with IPv6 BGP sessions: > > All Peerings reported "Error: Hold timer expired" ca. every 40 minutes. > > IPv6 forwarding was flapping all the time. > > After rebooting into kernel 4.9 everything worked again. > > IPv4 BGP was not affected and also OSPF (v4 and v6). I could disable all > IPv6 BGP peerings on this router and then it forwarded to another router > learned via OSPF for IPv6 without issues. > > Has anyone seen such a behaviour?
I’ve seen this with 4.19 on gentoo. For now I’m still running 4.14. https://archives.gentoo.org/gentoo-user/message/fab628cc53e4a55589410f9dff6abd23 -- Alarig
