We have done a test running Spark and Wildfire on an IPv6 network. Yes, we can confirm that there is absolutely no problem running them on both types of networks IP4 and IPv6. The target platform was w2k running on laptops.
Java supports IPv6 as following (single and dual stack options):
– Since 1.4.0 for Solaris & Linux
– In 1.5.0 for Windows (XP SP1 & 2003).
Thanks for the great software