IPV6_PORTRANGE
portrange = IPV6_PORTRANGE;
#ifdef IPV6_PORTRANGE
if (setsockopt(sd, IPPROTO_IPV6, IPV6_PORTRANGE,
opt.sopt_name = IPV6_PORTRANGE;
case IPV6_PORTRANGE:
case IPV6_PORTRANGE:
case IPV6_PORTRANGE:
IPV6_PORTRANGE, &val, sizeof(val))))