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: [email protected]) "To err is human -- to blame it on a computer is even more so."
