dependent ospf areas

[Илья Шипицин]

hello,

we use BIRD with 2 ospf areas: external and internal.
can someone give an advice how to implement dependent filters?

i.e. "if there are no neighbors on internal, so do not export anything on
external"?

and "if there at least one neighbor on internal, export routes on external"

thanks!
Ilya Shipitsin
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