Pipe with scope link

[Ondrej Zajicek]

On Mon, May 04, 2020 at 11:34:38AM -0700, David Haupt wrote:
> Hi
> 
> First time user of bird here so please be gentle. :)
> I am trying to use bird for a project and I'd like to use it for creating
> separate routing tables in linux.

..

> [root at host1 etc]# ip link add mylink type dummy
> [root at host1 etc]# ip link set mylink up
> [root at host1 etc]# ip route add 10.0.2.3/32 dev mylink
> [root at host1 etc]# systemctl restart bird
> [root at host1 etc]# ip r
> default via 172.29.0.1 dev eth1
> 10.0.2.3 dev mylink scope link
> 172.29.0.0/25 dev eth1 proto kernel scope link src 172.29.0.20
> 172.30.2.0/25 dev eth0 proto kernel scope link src 172.30.2.20
> [root at host1 etc]# ip r show table 100
> default via 172.29.0.1 dev eth1 proto bird
> 
> Is there any way that I can have the 10.0.2.3/32 route show up in kernel
> table 100?

Hi

You should check 'birdc show route' and 'birdc show route table extra' to
see where on the path bird lost it. Also, you do not need restart bird
after adding the route.

But i think that in BIRD 1.6.x there is special exception for device
routes (i.e. routes without gateway address) so they are not exported to
kernel, you need to use 'device routes' option for the second kernel
protocol:

https://bird.network.cz/?get_doc&v=16&f=bird-6.html#krt-device-routes

-- 
Elen sila lumenn' omentielvo

Ondrej 'Santiago' Zajicek (email: santiago at crfreenet.org)
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"To err is human -- to blame it on a computer is even more so."