setsockopt(sock, SOL_SOCKET, SO_BROADCAST, &val, sizeof(val));
setsockopt(sock, IPPROTO_IP, IP_PKTINFO, &val, sizeof(val));
- val = IPTOS_CLASS_CS6;
+ val = IPTOS_PREC_INTERNETCONTROL;
setsockopt(sock, IPPROTO_IP, IP_TOS, &val, sizeof(val));
val = IP_PMTUDISC_DONT;