Secretariat to tell us about the APNIC Labs. Geoff Huston: I wish you could see my slides, but they are somewhere in the ether, so there you go. I am Geoff Houston, the Chief Scientist at APNIC, and I work with the support from George Michaelson in particular, but also a fair deal of support from Byron Ellacott and the technical team, in working on areas around research. You have seen this week two of the major topics I have been looking at in recent times.  One is to understand a lot about IPv4 exhaustion and what it means and how and why and when it happens. As you heard earlier this week, it's still not over and there's still much to understand about the ongoing saga. The other area that has taken up much of our time has been in looking at IPv6 and its current deployment and the phenomenal speed at which folk are deploying IPv6 all over the Internet.  We have been doing a fair deal of work in trying to measure this in quite precise terms, both in terms of its uptake and in terms of its relative performance and the behaviour of clients.  Most of those reports, as I said, form part of what's been happening this week and also online. As well as that, I've been doing a fair deal of work measuring BGP, its scaling properties and the issues around its security and how and why the dynamic properties of BGP still appear