331             if ips and ips[-1]._version != ip._version:
336             if ips and ips[-1]._version != ip._version:
344             if nets and nets[-1]._version != ip._version:
420             raise AddressValueError(msg % (address, self._version))
424                                            self._version))
431                                            expected_len, self._version))
556                     and self._version == other._version)
563         if self._version != other._version:
592         return (self._version, self)
650         if self._version != other._version:
661             return (self._version == other._version and
672         if self._version != other._version:
772         if not self._version == other._version:
844         if self._version != other._version:
867         return (self._version, self.network_address, self.netmask)
979             if a._version != b._version:
1076     _version = 4  variable in _BaseV4
1259         return self._version
1603     _version = 6  variable in _BaseV6
1874         return self._version