It's just a hack, but enough to get me started so I can asses some of what is needed to support running the tests on an IPv6-only environment.
http://cr.openjdk.java.net/~chegar/ipv6-only-hack/ My /etc/hosts file has entries for `localhost` and the _host_, that return `::1`. This is enough to get started, but it will run out of road quite soon. And it will break some things. Let's work towards getting a better solution. Also, we will need test library support for determining whether the platform supports: 1) IPv4, or 2) IPv6, or 3) IPv4&IPv6. I filed 8220673 [1] to tracks this. --- Regarding what to do with URL's in test. I tried a few different approaches, I am leaning towards: String host = loopbackAddress.getHostAddress(); if (host.contains(":")) host = "[" + host + "]"; Since it: 1) is relatively short and concise, and 2) ensures, in many cases, that the client and server use the same IP address, and 3) clearly shows the actual IP protocol in use, e.g. http://[0:0:0:0:0:0:0:1]:46009/zero/xxyy A sample of some tests that have been updated as above: http://cr.openjdk.java.net/~chegar/8220575/webrev.0.1/ (not too bad!) -Chris. P.S. I ran into an implementation bug and filed, 8220663: "Incorrect handling of IPv6 addresses in Socket(Proxy.HTTP)" - the fix is straight forward. [1] https://bugs.openjdk.java.net/browse/JDK-8220673
