Regression test/java/net/MulticastSocket/TestInterfaces fails with
the following exception on Solaris 8 and Solaris 9 if IPv6 is enabled :-

Failure occurs with beta-refresh b67 (okay in merlin-beta).

Exception in thread "main" java.net.SocketException: IPV6_MULTICAST_IF returned index to non-existance interface
        at java.net.PlainDatagramSocketImpl.socketGetOption(Native Method)
        at java.net.PlainDatagramSocketImpl.getOption(PlainDatagramSocketImpl.java:292)
        at java.net.MulticastSocket.getInterface(MulticastSocket.java:414)
        at TestInterfaces.main(TestInterfaces.java:34)