From 2c67eafc6e6c5e210636c0d2bad15827bf2d7cf0 Mon Sep 17 00:00:00 2001
From: Guus Sliepen <guus@tinc-vpn.org>
Date: Sun, 24 May 2009 15:58:47 +0200
Subject: [PATCH] If PMTUDiscovery is not set, do not forward packets via TCP
 unnecessarily.

---
 src/net_packet.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/net_packet.c b/src/net_packet.c
index 1730023..de6ae55 100644
--- a/src/net_packet.c
+++ b/src/net_packet.c
@@ -342,7 +342,7 @@ static void send_udppacket(node_t *n, vpn_packet_t *origpkt)
 		return;
 	}
 
-	if(!n->minmtu && (inpkt->data[12] | inpkt->data[13])) {
+	if(n->options & OPTION_PMTU_DISCOVERY && !n->minmtu && (inpkt->data[12] | inpkt->data[13])) {
 		ifdebug(TRAFFIC) logger(LOG_INFO,
 				_("No minimum MTU established yet for %s (%s), forwarding via TCP"),
 				n->name, n->hostname);
-- 
2.25.1