Link-local address change in Blackhole routing

[ushiroz at ate-mahoroba.jp]

Thanks Maria for the response.

Thanks Maria for the response.
I understood that a manually modified bgp_next_hop is sent without an associated link-local address.


On Fri, 04 Oct 2024 13:19:34 +0200
Maria Matejka <maria.matejka at nic.cz> wrote:

> Hello,
> 
> iirc setting bgp_next_hop to something new should discard the LL address altogether. (Sitting at a meeting, not checking.)
> 
> M
> 
> 
> On 4 October 2024 12:41:24 CEST, ushiroz at ate-mahoroba.jp wrote:
> >Hi
> >
> >I am aware that IPv4 next-hop / IPv6 next-hop global can be achieved by changing bgp_next_hop when Blackhole Community is applied.
> >I believe that if we notify the next-hop of only global, the link-local in the FIB will remain the same as the peer's address even though the RIB has changed, resulting in unintended behavior, and I believe that the link-local address needs to be changed.
> >
> >Is it possible to change the link-local address in Bird?
> >
> >
> 
> -- 
> Maria Matejka (she/her) | BIRD Team Leader | CZ.NIC, z.s.p.o.