struct sockaddr_in6 sa;
char str[INET6_ADDRSTRLEN];
unsigned long nbuf[sizeof(struct in6_addr)];
int i = inet_pton(AF_INET6, buf, (void *)&sa.sin6_addr);
if (i > 0)
{
printf("0x%x%x%x%x\n",
htonl(sa.sin6_addr.s6_addr32[0]),
htonl(sa.sin6_addr.s6_addr32[1]),
htonl(sa.sin6_addr.s6_addr32[2]),
htonl(sa.sin6_addr.s6_addr32[3])); //#1
inet_ntop(AF_INET6, &sa.sin6_addr, str, INET6_ADDRSTRLEN);
printf("%s\n", str); // prints source ip //#2
}
#1能够打印出ipv6的十六进制数
#2转回源IP
