OSPF: External routes (ABR vs ASBR)

[Ruben Laban]

Hi list,

I'm trying to figure out how bird distinguishes between imported routes 
that are shown as "external" route directly under the router's id (in 
"show ospf state") and those listed under the "other ASBRs" header. I 
have different boxes showing different behavior. I just can't seem to 
pinpoint the reason for a route show up under the "other ASBRs" header.

Regards,
Ruben Laban