bgpd: sanity check when updating nexthop from bgp to zebra

nexthop may sometimes not be passed through zebra, like for onlink
messages.

Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>

diff --git a/bgpd/bgp_zebra.c b/bgpd/bgp_zebra.c
index 87936f1dd6d3f47944798bf1d2dad30f3913b081..639500fafc16a37565333ee934df9cf839e905d4 100644 (file)
--- a/bgpd/bgp_zebra.c
+++ b/bgpd/bgp_zebra.c
@@ -1144,7 +1144,8 @@ static bool update_ipv6nh_for_route_install(int nh_othervrf, struct bgp *nh_bgp,
                        api_nh->ifindex = 0;
                }
        }
-       api_nh->gate.ipv6 = *nexthop;
+       if (nexthop)
+               api_nh->gate.ipv6 = *nexthop;
 
        return true;
 }