diff --git a/pimd/pim_iface.c b/pimd/pim_iface.c
index 2533d0f..ddad6cb 100644
--- a/pimd/pim_iface.c
+++ b/pimd/pim_iface.c
@@ -107,6 +107,7 @@
   pim_ifp->igmp_socket_list = 0;
   pim_ifp->pim_neighbor_list = 0;
   pim_ifp->pim_ifchannel_list = 0;
+  pim_ifp->pim_generation_id = 0;
 
   /* list of struct igmp_sock */
   pim_ifp->igmp_socket_list = list_new();