Binding to some interfaces only for multihop bgp

[Sebastian Hahn]

Hi Ondrej,

> On 19. Feb 2023, at 19:02, Sebastian Hahn <bird_users at sebastianhahn.net> wrote:
>> On 19. Feb 2023, at 18:41, Ondrej Zajicek <santiago at crfreenet.org> wrote:
>> On Sun, Feb 19, 2023 at 06:28:03PM +0100, Sebastian Hahn wrote:
>>>> On 19. Feb 2023, at 16:31, Alexander Zubkov <green at qrator.net> wrote:
>>>> Hi,
>>>> 
>>>> I doubt that strict bind option is incompatible with multihop. Do you have some problems with it?
>>> 
>>> I get the following error:
>>> 
>>> Multihop BGP cannot be bound to interface
>> 
>> Hi
>> 
>> The strict bind option is not really related to interface, but to local
>> IP (because binding to interface really means binding to its IP). Just do
>> not use inteface option, while keep strict bind enabled and local IP set.
> 
> For each BGP connection I have a separate interface and I am wondering
> how I would deal with this suggestion then. I think it would mean a
> separate unique IP for each neighbour, assigned to the interface, yes?

I have to apologize, it works just as you described. When I tried earlier,
I had received an error about being unable to open a listening socket,
but this was, I assume, due to reloading bird instead of restarting. I
had assumed that this was because bird tried to open the same socket
once for each protocol, but it does not.

Thanks
Sebastian