The Linux Foundation has announced that some of the major Linux distributions have been made IPv6 ready.
IPv4 adresses have been running out for a while, and so in 2005 the US federal government mandated that all federal agencies upgrade their backbones, to be IPv6 compliant by 2008.
The Linux Foundation set up a Linux IPv6 Workgroup in 2000, whose participants include IBM, HP, Nokia-Siemens, Novell and Red Hat. The Linux Foundation announced on Monday that:
"[The] IPv6 (Internet Protocol Version 6) Workgroup has enabled the major Linux “distros” to meet the U.S. Federal Government’s Department of Defense (DOD) mandate and certification requirements for this next generation Internet protocol."
While the Linux Foundation statement didn't say which Linux distributions had been certified, I'm assuming Red Hat Enterprise Linux, SUSE, and Fedora would be among them.