diff --git a/src/net_packet.c b/src/net_packet.c
index 5e503f58..31c44771 100644
--- a/src/net_packet.c
+++ b/src/net_packet.c
@@ -71,7 +71,7 @@ void send_mtu_probe(node_t *n)
 	n->mtuevent = NULL;
 
 	if(!n->status.reachable) {
-		ifdebug(TRAFFIC) logger(LOG_INFO, _("Trying to send MTU probe to unreachable node %s (%s)"), n->name, n->hostname);
+		logger(LOG_DEBUG, _("Trying to send MTU probe to unreachable node %s (%s)"), n->name, n->hostname);
 		return;
 	}
 
diff --git a/src/node.c b/src/node.c
index 9d359253..a4ef78f2 100644
--- a/src/node.c
+++ b/src/node.c
@@ -176,10 +176,11 @@ void update_node_udp(node_t *n, const sockaddr_t *sa)
 		n->hostname = sockaddr2hostname(&n->address);
 		avl_delete(node_udp_tree, n);
 		avl_insert(node_udp_tree, n);
-		logger(LOG_DEBUG, "UDP address of %s set to %s", n->name, n->hostname);
+		ifdebug(PROTOCOL) logger(LOG_DEBUG, "UDP address of %s set to %s", n->name, n->hostname);
 	} else {
 		memset(&n->address, 0, sizeof n->address);
-		logger(LOG_DEBUG, "UDP address of %s cleared", n->name);
+		n->hostname = 0;
+		ifdebug(PROTOCOL) logger(LOG_DEBUG, "UDP address of %s cleared", n->name);
 	}
 }