Bind a socket to a network if the network handle is set.

webrtc/p2p/base/stunport.cc

Index: webrtc/p2p/base/stunport.cc
diff --git a/webrtc/p2p/base/stunport.cc b/webrtc/p2p/base/stunport.cc
index 67cf789da8e3c869322d959f6939a2e339db9ed9..2312bad3bbfe09a0e43d003f7769bf36b4288201 100644
--- a/webrtc/p2p/base/stunport.cc
+++ b/webrtc/p2p/base/stunport.cc
@@ -214,8 +214,8 @@ UDPPort::UDPPort(rtc::Thread* thread,
 bool UDPPort::Init() {
   if (!SharedSocket()) {
     ASSERT(socket_ == NULL);
-    socket_ = socket_factory()->CreateUdpSocket(
-        rtc::SocketAddress(ip(), 0), min_port(), max_port());
+    socket_ = socket_factory()->CreateUdpSocketOnNetwork(
+        rtc::SocketAddress(ip(), 0), min_port(), max_port(), Network());
     if (!socket_) {
       LOG_J(LS_WARNING, this) << "UDP socket creation failed";
       return false;