KAZOO-3336: execute nat correction for recieved OPTIONS

kamailio/default.cfg

@@ -305,6 +305,10 @@ route[HANDLE_OPTIONS]
             route(FILTER_REQUEST_DOMAIN);
             #!endif
 
+            #!ifdef NAT-TRAVERSAL-ROLE
+            route(NAT_TEST_AND_CORRECT);
+            #!endif
+
             sl_send_reply("200", "Rawr!!");
         }
         exit;