This is a group of test which need to be run on IPv6 only configured systems.

Adding test group for IPv6 exclusive testing
addition to test/jdk/TEST.groups:

jdk_core_ipv6_only = \
:jdk_net \
:jdk_nio_networkchannel

relevant tests for jdk_nio_networkchannel are:

jdk_nio_networkchannel = \
java/nio/channels/AsyncCloseAndInterrupt.java \
java/nio/channels/AsynchronousServerSocketChannel \
java/nio/channels/AsynchronousSocketChannel \
java/nio/channels/DatagramChannel \
java/nio/channels/ServerSocketChannel \
java/nio/channels/SocketChannel \
java/nio/channels/Selector \
java/nio/channels/etc