1 files changed, 1 insertions, 1 deletions
diff --git a/tap.c b/tap.c
index f3d1f66..6503551 100644
--- a/tap.c
+++ b/tap.c
@@ -1104,7 +1104,7 @@ void tap_add_packet(struct ctx *c, struct iov_tail *data,
 		memcpy(c->guest_mac, eh->h_source, ETH_ALEN);
 		debug("New guest MAC address observed: %s",
 		      eth_ntop(c->guest_mac, bufmac, sizeof(bufmac)));
-		proto_update_l2_buf(c->guest_mac, NULL);
+		proto_update_l2_buf(c->guest_mac);
 	}
 
 	switch (ntohs(eh->h_proto)) {