IPV6_2292HOPLIMIT
put_cmsg(msg, SOL_IPV6, IPV6_2292HOPLIMIT, sizeof(hlim), &hlim);
case IPV6_2292HOPLIMIT:
put_cmsg(&msg, SOL_IPV6, IPV6_2292HOPLIMIT, sizeof(hlim), &hlim);
case IPV6_2292HOPLIMIT:
case IPV6_2292HOPLIMIT:
case IPV6_2292HOPLIMIT: