IPv6Multicast
typedef MulticastGroupInterface<IPv6Multicast> IPv6GroupInterface;
typedef MulticastFilter<IPv6Multicast> IPv6MulticastFilter;
IPv6Multicast::JoinGroup(IPv6GroupInterface* state)
IPv6Multicast::LeaveGroup(IPv6GroupInterface* state)
template class MulticastFilter<IPv6Multicast>;
template class MulticastGroupInterface<IPv6Multicast>;
typedef MulticastGroupInterface<IPv6Multicast> GroupInterface;