On Tue, Feb 17, 2026 at 05:23:50PM +0100, Mariusz Gronczewski wrote:
I have dug some more and tried to change network interface setting
on 10.30.1.0/31 RFC 3021 link (no broadcast), doesn't propagate route on 10.30.1.1/30 link, doesn't propagate routes on 10.30.1.1/29 link, propagates routes just fine
Similar setup "just works" in FRR so I'm now very confused on what is happening.
Setup is 3 devices (other router and core L3 switches) all with separate VLAN and /31 assigned to it.
Hi Isn't that just mismatched ptp/broadcast mode? BIRD defaults to ptp mode for /30 and similar networks, but i thought that in mismatch mode it would not even make an adjacency. But perhaps it makes adjacency, just not work correctly. Try setting explicitly broadcast mode (or ptp mode on the other side). -- Elen sila lumenn' omentielvo Ondrej 'Santiago' Zajicek (email: santiago@crfreenet.org) "To err is human -- to blame it on a computer is even more so."