Hello We still have some hosts with the quagga routing daemon in a bird environment. With the bird releases 1.0.11 and 1.0.12 it is not working. Bird gets the routes, but quagga doesn't. With the following patch, which Ondrej gave me, it is working (with both releases). Is there any reason, why this patch is not in the current bird release? --- bird-1.0.11.old/proto/ospf/topology.c 2005-02-21 11:05:22.000000000 +0100 +++ bird-1.0.11/proto/ospf/topology.c 2008-09-30 14:32:45.000000000 +0200 @@ -90,14 +90,7 @@ ln->id = neigh->rid; ln->metric = ifa->cost; ln->notos = 0; - if (ifa->iface->addr->flags & IA_UNNUMBERED) - { - ln->data = ifa->iface->index; - } - else - { - ln->data = ipa_to_u32(ifa->iface->addr->ip); - } + ln->data = ipa_to_u32(ifa->iface->addr->ip); } else { Best regards Elmar