I would add only one point to Tomas Pospisek's excellent analysis. Without diligent precautions, IPv6 is horribly insecure. You thought your firewall protected you, but now "apt-get dist-upgrade" will open your protected apps to the outside world. By all means make IPv6 easy to use if you wish, but never never never enable IPv6 by default. --Mike Bird [ tpo@sourcepole.ch cc per request ]