router_utils.py 文件源码

def is_ipv4_address(self, ipaddr):
        '''
        @summary: Check address is valid IPv4 address.
        @param ipaddr IP address to check
        @return Boolean
        '''
        is_valid_ipv4 = True
        try :
            # building ipaddress fails for some of addresses unless unicode(ipaddr) is specified for both ipv4/ipv6
            # Example - 192.168.156.129, it is valid IPV4 address, send_packet works with it.
            ip = ipaddress.IPv4Address(unicode(ipaddr))
        except Exception, e :
            is_valid_ipv4 = False

        return is_valid_ipv4
    #---------------------------------------------------------------------