237         return NULL;

   237         return NULL;

   238     }

   238     }

   239 

   239 

   240     ifs = enumInterfaces(env);

   240     ifs = enumInterfaces(env);

   241     if (ifs == NULL) {

   241     if (ifs == NULL) {

   242         return NULL;

   243         return NULL;

   243     }

   244     }

   244 

   245 

   245     // search the list of interfaces based on name,

   246     // search the list of interfaces based on name,

   246     // if it is virtual sub interface search with parent first.

   247     // if it is virtual sub interface search with parent first.