zebra: Add a breadcrumb for when we ignore a route

When we receive a route that we think we own and we
are not in startup conditions, then add a small debug
to help debug the issue when this happens, instead
of silently just ignoring the route.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>

diff --git a/zebra/rt_netlink.c b/zebra/rt_netlink.c
index 1ea2b853623cfb8817c5bf668e59edf5032ca819..08c81d037a51ab219fa54007fc980961a98f9836 100644 (file)
--- a/zebra/rt_netlink.c
+++ b/zebra/rt_netlink.c
@@ -310,8 +310,12 @@ static int netlink_route_change_read_unicast(struct sockaddr_nl *snl,
                return 0;
 
        if (!startup && is_selfroute(rtm->rtm_protocol)
-           && h->nlmsg_type == RTM_NEWROUTE)
+           && h->nlmsg_type == RTM_NEWROUTE) {
+               if (IS_ZEBRA_DEBUG_KERNEL)
+                       zlog_debug("Route type: %d Received that we think we have originated, ignoring",
+                                  rtm->rtm_protocol);
                return 0;
+       }
 
        /* We don't care about change notifications for the MPLS table. */
        /* TODO: Revisit this. */