utils.py 文件源码

def get_ipv6_network_address(iface):
    # Behave in same way as ipv4 get_network_address() above if iface is None.
    if not iface:
        return None

    try:
        ipv6_addr = utils.get_ipv6_addr(iface=iface)[0]
        all_addrs = netifaces.ifaddresses(iface)

        for addr in all_addrs[netifaces.AF_INET6]:
            if ipv6_addr == addr['addr']:
                network = "{}/{}".format(addr['addr'], addr['netmask'])
                return str(IPNetwork(network).network)

    except ValueError:
        msg = "Invalid interface '%s'" % iface
        status_set('blocked', msg)
        raise Exception(msg)

    msg = "No valid network found for interface '%s'" % iface
    status_set('blocked', msg)
    raise Exception(msg)