Multi protocol route handling (IPv4 via IPv6)

[Ondrej Zajicek]

On Sat, Nov 09, 2019 at 07:58:43PM +0100, Nico Schottelius wrote:
> Hello,
> 
> I have setup an MP-BGP with 2 bird instances and my aim is to route IPv4
> via IPv6, like cumulus is doing it.
> 
> Currently I receive the IPv4 and IPv6 routes via the IPv6 session, as
> follows:
> 
> 58.69.253.0/24       unicast [router2_place5_ungleich_ch_v6 18:11:21.625] ! (100) [AS36776i]
>         via 2a0a:e5c0:1:8::4 on bond0.8
> 23.211.0.0/22        unicast [router2_place5_ungleich_ch_v6 18:11:21.625] ! (100) [AS16625i]
>         via 2a0a:e5c0:1:8::4 on bond0.8
> ...
> 
> Now my question regarding bird:
> 
> If the kernel / i route actually supports it (as seen in the 2nd
> system), should bird2 be able to install the IPv4 routes via IPv6 or
> not?

Hello

It was implemented in BIRD before Linux kernel got the support, so kernel
interface was not tested and it is likely it would need some more work
now when it is supported by Linux. Thanks for notification, i did not know
that Linux got the support.

-- 
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."