Disable PMTU discovery when TCPOnly is set.

Obviously, PMTU discovery doesn't make much sense when we know we'll be
using TCP anyway.

diff --git a/src/protocol_key.c b/src/protocol_key.c
index 0eeddb8..a3cf3f5 100644 (file)
--- a/src/protocol_key.c
+++ b/src/protocol_key.c
@@ -386,7 +386,7 @@ bool ans_key_h(connection_t *c, const char *request) {
                                update_node_udp(from, &sa);
                        }
 
-                       if(from->options & OPTION_PMTU_DISCOVERY)
+                       if(from->options & OPTION_PMTU_DISCOVERY && !(from->options & OPTION_TCPONLY))
                                send_mtu_probe(from);
                }
 
@@ -435,7 +435,7 @@ bool ans_key_h(connection_t *c, const char *request) {
                update_node_udp(from, &sa);
        }
 
-       if(from->options & OPTION_PMTU_DISCOVERY)
+       if(from->options & OPTION_PMTU_DISCOVERY && !(from->options & OPTION_TCPONLY))
                send_mtu_probe(from);
 
        return true;