memset(sendmsg->payload.userStats->address.data, 0, 16);
/* ipv4 representation as ipv6 address. Supposedly correct. */
memset(&sendmsg->payload.userStats->address.data[10], 0xff, 2); /* IPv4 */
memset(sendmsg->payload.userStats->address.data, 0, 16);
/* ipv4 representation as ipv6 address. Supposedly correct. */
memset(&sendmsg->payload.userStats->address.data[10], 0xff, 2); /* IPv4 */