IPV6_DSTOPTS
case IPV6_DSTOPTS:
IPV6_DSTOPTS,
case IPV6_DSTOPTS:
case IPV6_DSTOPTS:
case IPV6_DSTOPTS:
if (optname == -1 || optname == IPV6_DSTOPTS) {
case IPV6_DSTOPTS:
case IPV6_DSTOPTS: