Problem: ZMQ_BINDTODEVICE not used for ZMQ_DISH

Solution: apply the option outside of the send/recv_enabled blocks so
that it is used for all types of UDP sockets

src/udp_engine.cpp

@@ -101,6 +101,10 @@ void zmq::udp_engine_t::plug (io_thread_t* io_thread_, session_base_t *session_)
     io_object_t::plug (io_thread_);
     handle = add_fd (fd);
 
+    // Bind the socket to a device if applicable
+    if (!options.bound_device.empty ())
+        bind_to_device (fd, options.bound_device);
+
     if (send_enabled) {
         if (!options.raw_socket) {
             out_address = address->resolved.udp_addr->dest_addr ();
@@ -123,10 +127,6 @@ void zmq::udp_engine_t::plug (io_thread_t* io_thread_, session_base_t *session_)
         errno_assert (rc == 0);
 #endif
 
-	// Bind the socket to a device if applicable
-	if (!options.bound_device.empty ())
-		bind_to_device (fd, options.bound_device);
-
         rc = bind (fd, address->resolved.udp_addr->bind_addr (),
                        address->resolved.udp_addr->bind_addrlen ());
 #ifdef ZMQ_HAVE_WINDOWS