BIRD removing BGP routes from other daemon - FreeBSD

[Alexander V. Chernikov]

25.06.2015, 10:41, "Ondrej Zajicek" <santiago at crfreenet.org>:
> On Thu, Jun 18, 2015 at 05:14:41PM -0300, Cassiano Peixoto wrote:
>>  Hello,
>>
>>  I have a particular scenario where my BGP runs with OpenBGP and I can not
>>  change it right now.
>>
>>  However I want BIRD to use OSPF and BFD. While BIRD works perfectly, better
>>  than OpenOSPF for my scenario, when I start it, it completely removes all
>>  routes installed by OpenBGP.
>
> Hello
>
> On BSD systems, BIRD uses PROTO1 route flag to identify 'its' routes. If
> OpenBGP uses the same flag, then they mix-up their routes. Currently
> there is no option in BIRD to change it to use PROTO2 or PROTO3 flag [*],
> i don't know about OpenBGP. I wonder if there is a better way to
> distinguish route ownership in BSD systems (like there is u8 rtm_protocol
> field in Linux).
Well, there is auto-filled rtm_pid field, so theoretically we can check if this pid (if filled) and flush routes
only if it is not currently running (yes, it is not ideal).
>
> [*] Could be changed in the source code on these lines in
> sysdep/bsd/krt-sock.c:
>
> msg.rtm.rtm_flags = RTF_UP | RTF_PROTO1;
> ...
> u32 self_mask = RTF_PROTO1;
>
> --
> Elen sila lumenn' omentielvo
>
> Ondrej 'Santiago' Zajicek (email: santiago at crfreenet.org)
> OpenPGP encrypted e-mails preferred (KeyID 0x11DEADC3, wwwkeys.pgp.net)
> "To err is human -- to blame it on a computer is even more so."