diff --git a/[refs] b/[refs]
index 62641f794b10..ab4dc398dcde 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 9a6d276e85aa3d8f308fc5e8de6892daeb60ae5f
+refs/heads/master: 51ce7ec92187b22ab1598987bb5f9776f6e0ebad
diff --git a/trunk/net/802/garp.c b/trunk/net/802/garp.c
index 3b78f7b74fd4..1dcb0660c49d 100644
--- a/trunk/net/802/garp.c
+++ b/trunk/net/802/garp.c
@@ -323,7 +323,10 @@ static void garp_attr_event(struct garp_applicant *app,
 	case GARP_ACTION_NONE:
 		break;
 	case GARP_ACTION_S_JOIN_IN:
-		garp_pdu_append_attr(app, attr, GARP_JOIN_IN);
+		/* When appending the attribute fails, don't update state in
+		 * order to retry on next TRANSMIT_PDU event. */
+		if (garp_pdu_append_attr(app, attr, GARP_JOIN_IN) < 0)
+			return;
 		break;
 	case GARP_ACTION_S_LEAVE_EMPTY:
 		garp_pdu_append_attr(app, attr, GARP_LEAVE_EMPTY);