IPV6 on RedHat

Niall has posted some details on setting up IPV6 on Redhat based distros.
Why do I mention it?
Well it’s kind of nice to be able to get IPV6 going across all servers and services on our network. If other people’s networks are capable of communication over v6 then we should be able to reciprocate (like was the case when I was in Lisbon).