IPv6 BGP & kernel 4.19

[Alarig Le Lay]

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