IPV6_FLOWLABEL_MGR
case IPV6_FLOWLABEL_MGR:
case IPV6_FLOWLABEL_MGR:
case IPV6_FLOWLABEL_MGR:
if (setsockopt(fd, SOL_IPV6, IPV6_FLOWLABEL_MGR, &req, sizeof(req)))
#ifndef IPV6_FLOWLABEL_MGR
#ifndef IPV6_FLOWLABEL_MGR
return setsockopt(fd, SOL_IPV6, IPV6_FLOWLABEL_MGR, &req, sizeof(req));
return setsockopt(fd, SOL_IPV6, IPV6_FLOWLABEL_MGR, &req, sizeof(req));