From: Guus Sliepen <guus@tinc-vpn.org>
Date: Sun, 26 Feb 2012 15:23:02 +0000 (+0100)
Subject: Only use broadcast at the start of the PMTU discovery phase.
X-Git-Tag: release-1.0.17~6
X-Git-Url: https://www.tinc-vpn.org/git/browse?p=tinc;a=commitdiff_plain;h=ae5249610954af17c68c547bb1b45ad286ad647e

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 18a898d3..4b3496d3 100644
--- 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);