bgpd: Allow peering via 127.0.0.0/8

[mirror_frr.git] / bgpd / bgp_zebra.c

diff --git a/bgpd/bgp_zebra.c b/bgpd/bgp_zebra.c
index da598993d145480e4520bf5e4da041af82e01dcc..346b3c90fd8fa93ba477bdfa35f07d5c94d37d70 100644 (file)
--- a/bgpd/bgp_zebra.c
+++ b/bgpd/bgp_zebra.c
@@ -834,6 +834,13 @@ bool bgp_zebra_nexthop_set(union sockunion *local, union sockunion *remote,
                                                      peer->bgp->vrf_id);
        }
 
+       /* Handle peerings via loopbacks. For instance, peer between
+        * 127.0.0.1 and 127.0.0.2. In short, allow peering with self
+        * via 127.0.0.0/8.
+        */
+       if (!ifp && cmd_allow_reserved_ranges_get())
+               ifp = if_get_vrf_loopback(peer->bgp->vrf_id);
+
        if (!ifp) {
                /*
                 * BGP views do not currently get proper data