POST /

Content-Type: application/x-www-form-urlencoded

Action=AssignIpv6Addresses&Ipv6AddressCount=1&Ipv6Addresses.1=__Member__&Ipv6Addresses.2=__Member__&Ipv6Prefix.1=__Member__&Ipv6Prefix.2=__Member__&Ipv6PrefixCount=1&NetworkInterfaceId=__NetworkInterfaceId__&Version=2016-11-15