gistfile1.py

class IPField(models.Field):
    __metaclass__ = models.SubfieldBase
    description = 'IP Field'

    def get_db_prep_value(self, value, connection, prepared=False):
        value = super(IPField, self
            ).get_db_prep_value(value, connection, prepared)
        if value is not None:
            tmp = ipaddr.IPAddress(value)
            if ':' in value:
                return tmp.packed
            else:
                return 12*'\0' + tmp.packed
        return value

    # def get_prep_value(self, value):
    #     if not value:
    #         return 'NULL'
    #     else:
    #         tmp = ipaddr.IPAddress(value)
    #         if ':' in value:
    #             return tmp.packed
    #         else:
    #             return 12*'\0' + tmp.packed