LLGR De-Preferencing

[Nell Jerram]

Could it be because of the higher local preference value?

On Mon, 1 Dec 2025, 18:00 Matt Corallo, <birdlist at as397444.net> wrote:

> It appears bird (2.17.1) doesn't implement the required LLGR
> de-preferencing logic, eg in a simple
> test environment with LLGR and one (otherwise-preferred) session down,
> bird shows it as still
> selected even though it has the stale flag (see below). Is there any way
> to do the required
> de-preferencing with filters or would a patch to implement this be simple?
>
> Thanks.
>
> bird> show route for 69.59.18.0 all
> Table master4:
> 69.59.18.0/24        unicast [localsyncb 17:06:58.262 from 10.242.243.12]
> * (101s) [AS397444i]
>         Type: BGP univ
>         BGP.origin: IGP
>         BGP.as_path: 397444
>         BGP.next_hop: ....
>         BGP.local_pref: 101
>         BGP.community: (65535,6)
>                       unicast [localsync 2025-11-30 from 10.242.242.12]
> (100) [AS397444i]
>         Type: BGP univ
>         BGP.origin: IGP
>         BGP.as_path: 397444
>         BGP.next_hop: ....
>         BGP.local_pref: 100
>
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