diff options
| -rw-r--r-- | proto/bgp/packets.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/proto/bgp/packets.c b/proto/bgp/packets.c index f244e3c..27adc16 100644 --- a/proto/bgp/packets.c +++ b/proto/bgp/packets.c @@ -305,14 +305,25 @@ bgp_create_update(struct bgp_conn *conn, byte *buf) * in the same interface, we should also send a link local * next hop address. We use the received one (stored in the * other part of BA_NEXT_HOP eattr). If we didn't received - * it (for example it is a static route), we do not send link - * local next hop address. It is contrary to RFC 2545, but - * probably the only sane possibility. + * it (for example it is a static route), we can't use + * 'third party' next hop and we have to use local IP address + * as next hop. Sending original next hop address without + * link local address seems to be a natural way to solve that + * problem, but it is contrary to RFC 2545 and Quagga does not + * accept such routes. */ n = neigh_find(&p->p, &ip, 0); if (n && n->iface == p->neigh->iface) - ip_ll = ipp[1]; + { + if (ipa_nonzero(ipp[1])) + ip_ll = ipp[1]; + else + { + ip = p->source_addr; + ip_ll = p->local_link; + } + } } if (ipa_nonzero(ip_ll)) |