Wrong default route announced with OSPF

[Thomas Berger]

Hi all, 

we have a strange issue with bird and OSPF:

We have set up a two redundant firewall clusters, one for external and one for 
internal routing. 

The setup is working well, as long as only the active external firewall has 
bird running. If we start bird on the passive firewall, the wrong Gateway for 
0.0.0.0/0 is announced:

The passive firewall has no default route in the main table ( until it imports 
the one from its peer of course)


_active firewall ( before and after starting bird on the passive fw)_
bird> show route all
0.0.0.0/0          via 178.19.71.1 on eth1 [kernel1 03:59:51] * (10)
        Type: inherit unicast univ
        Kernel.source: 3
        Kernel.metric: 4

_internal firewall before the start if the second bird instance_
0.0.0.0/0          via 10.11.0.1 on fwfwtrans [ppospf 17:39:36] * E2 
(150/15/10000) [10.11.0.1]
        Type: OSPF-E2 unicast univ
        OSPF.metric1: 15
        OSPF.metric2: 10000
        OSPF.tag: 0x00000000
        OSPF.router_id: 10.11.0.1

_internal firewall after the start if the second bird instance_
0.0.0.0/0          via 10.11.0.2 on fwfwtrans [ppospf 17:38:03] * E2 
(150/15/10000) [10.11.0.1]
        Type: OSPF-E2 unicast univ
        OSPF.metric1: 15
        OSPF.metric2: 10000
        OSPF.tag: 0x00000000
        OSPF.router_id: 10.11.0.1


Any idea?
-- 
Thomas Berger
BundesIT

Piratenpartei Deutschland – Pirate Party of Germany Pflugstraße 9a,
D-10115 Berlin, Germany

Patrick Schiffer (Vors.), Carsten Sawosch (Stellv. Vors.),
Kristos Thingilouthis (Pol. GF), Lothar Krauß (Schatzm.),
Thomas Knoblich (Stellv. GS), Alexander Niedermeier (Stellv pol. GF),
Steffen Heuer (Stellv. Schatzm.)