Multiple Kernel Tables on one BIRD Table

[Alexander Zubkov]

Hi,

It is explained in the documentation:
https://bird.network.cz/?get_doc&v=20&f=bird-6.html#ss6.6

> If your OS supports only a single routing table, you can configure only one instance of the Kernel protocol. If it supports multiple tables (in order to allow policy routing; such an OS is for example Linux), you can run as many instances as you want, but each of them must be connected to a different BIRD routing table and to a different kernel table.
> Because the kernel protocol is partially integrated with the connected routing table, there are two limitations - it is not possible to connect more kernel protocols to the same routing table and changing route destination (gateway) in an export filter of a kernel protocol does not work. Both limitations can be overcome using another routing table and the pipe protocol.

On Mon, Jun 1, 2020 at 8:06 PM Matt Corallo <birdlist at as397444.net> wrote:
>
> When trying to sync a BIRD routing table to multiple kernel routing tables (with different export filters, obviously),
> BIRD refuses with, eg, "Kernel syncer (v6kern) already attached to table master6". Is this something that is fundamental
> or would be it easy to address this by allowing it if the "kernel table" field has a different value?
>
> Thanks,
> Matt