Submitter reporting some problems around setting of TOS on the classic networking sockets. No issues seen on NIO sockets.

A typical use case might be :
        ServerSocket ss = new ServerSocket();
        jdk.net.Sockets.setOption(ss, java.net.StandardSocketOptions.IP_TOS, 128);
        // bind
        // accept

 The remaining Java related problems are:
 1. Blocking TCP IPv6 Server sockets (java.net). This is not working neither on Oracle Solaris 10 1/13 or a recent Linux (CentOS 7).
 2. Blocking TCP IPv4 Server sockets (java.net) on Linux. Here the initial SYN packet is missing the TOS flag.

 Solaris system:
 java version "1.7.0_80-ea"
 Java(TM) SE Runtime Environment (build 1.7.0_80-ea-b04)
 Java HotSpot(TM) Server VM (build 24.80-b07, mixed mode)

 cat /etc/release
                    Oracle Solaris 10 1/13 s10x_u11wos_24a X86
  Copyright (c) 1983, 2013, Oracle and/or its affiliates. All rights
reserved.
                            Assembled 17 January 2013

 Results:
 
 IPv6
 TCP:
 Client Socket: OK
 Server Socket: Not OK
 
 TCPNIO:
 Client Socket: OK
 Server Socket: OK
 
 UDP:
 Client Socket: OK
 Server Socket: OK
 
 IPv4(all with -Djava.net.preferIPv4Stack=true)
 
 TCP:
 Client Socket: OK
 Server Socket: OK
 
 TCPNIO:
 Client Socket: OK
 Server Socket: OK
 
 UDP:
 Client Socket: OK
 Server Socket: OK