elif self._u.d_push(re.match(r'^eth\d+$', master_if)) \
or self._u.d_push(re.match(r'^em\d+$', master_if)) \
or self._u.d_push(re.match(r'^igb\d+$', master_if)) \
elif self._u.d_push(re.match(r'^eth\d+$', master_if)) \
or self._u.d_push(re.match(r'^em\d+$', master_if)) \
or self._u.d_push(re.match(r'^igb\d+$', master_if)) \