Only use broadcast at the start of the PMTU discovery phase.

For local peer discovery, only a handful of packets are necessary for
peers to detect each other.

diff --git a/src/net_packet.c b/src/net_packet.c
index 18a898d..4b3496d 100644 (file)
--- a/src/net_packet.c
+++ b/src/net_packet.c
@@ -138,7 +138,10 @@ void send_mtu_probe(node_t *n) {
                memset(packet.data, 0, 14);
                RAND_pseudo_bytes(packet.data + 14, len - 14);
                packet.len = len;
-               packet.priority = i < 3 ? 0 : -1;
+               if(i >= 3 && n->mtuprobes <= 10)
+                       packet.priority = -1;
+               else
+                       packet.priority = 0;
 
                ifdebug(TRAFFIC) logger(LOG_INFO, "Sending MTU probe length %d to %s (%s)", len, n->name, n->hostname);