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-rw-r--r--zebra/interface.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/zebra/interface.c b/zebra/interface.c
index 14c3e78a..162439fa 100644
--- a/zebra/interface.c
+++ b/zebra/interface.c
@@ -368,6 +368,8 @@ if_add_update (struct interface *ifp)
struct zebra_if *if_data;
if_data = ifp->info;
+ assert(if_data);
+
if (if_data->multicast == IF_ZEBRA_MULTICAST_ON)
if_set_flags (ifp, IFF_MULTICAST);
else if (if_data->multicast == IF_ZEBRA_MULTICAST_OFF)