advertise OSPF default route into a specific area?

hello, i'm using BIRD 2.16.1 on FreeBSD 15.0. i have an OSPF ABR in area 0 and area 1. this router has a default route via a non-OSPF interface (kernel route, imported into BIRD using the 'kernel' protocol). i'd like to advertise this route into area 1, but *not* into area 0. how would i go about doing that? please feel free to let me know if this is a bad idea or if i'm using OSPF wrong :-) thanks, lexi.