diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index 65bcaa7..c803458 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -500,7 +500,7 @@
 	else
 		sprintf(name, "pimreg%u", mrt->id);
 
-	dev = alloc_netdev(0, name, reg_vif_setup);
+	dev = alloc_netdev(0, name, NET_NAME_UNKNOWN, reg_vif_setup);
 
 	if (dev == NULL)
 		return NULL;