Bird OSPF bug? (Mutliple areas, rfc1583compat off, cost ignored)

Igor Podlesny bird.user at
Sat Jan 26 08:07:52 CET 2019

I have test lab -- two OSPF routers, Bird 1.6.4: A, B.

2 areas defined:, Export "all".

When rfc1583compat is Off I observe default route gets propagated via
area in despite its interfaces have higher costs than area's have.

Turning rfc1583compat On changes it to expected behaviour: interfaces
costs are respected again.

Bug or am I missing some piece of OSPF knowledge here?

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