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About the author
Geoff Huston AM is the Chief Scientist at APNIC, where he undertakes research on topics associated with Internet infrastructure, IP technologies, and address distribution policies. From 1995 to 2005, Geoff was the Chief Internet Scientist at Telstra, where he provided a leading role in the construction and further development of Telstra's Internet service offerings, both in Australia and as part of Telstra's global operations. Prior to Telstra, Mr Huston worked at the Australian National University, where he led the initial construction of the Internet in Australia in the late 1980s as the Technical Manager of the Australian Academic and Research Network. He has authored a number of books dealing with IP technology, as well as numerous papers and columns. He was a member of the Internet Architecture Board from 1999 until 2005 and served as its Executive Director from 2001 to 2005. He is an active member of the Internet Engineering Task Force, where he currently chairs two Working Groups. He served on the Board of Trustees of the Internet Society from 1992 until 2001 and served a term as Chair of the Board in 1999. He has served on the Board of the Public Internet Registry and also on the Executive Council of APNIC. He chaired the Internet Engineering and Planning Group from 1992 until 2005.
Links & Social
It’s been almost seven years since World IPv6 Launch day on 6 June 2011 (*). In those seven years, we’ve managed to place ever-increasing pressure on the dwindling pools of available IPv4 addresses, but we have still been unable to complete the transition to an all-IPv6 Internet.
The first part of this article looked at what happens when an authoritative DNS server delivers fragmented UDP responses to DNS resolvers using IPv6. Now we measured the packet drop rate when sending fragmented packets to IPv6 end hosts.
The IPv6 protocol introduced very few changes to its IPv4 predecessor. The major change was of course the expansion of the size of the IP source and destination address fields in the packet header from 32-bits to 128-bits. There were, however, some other changes that apparently were intended to sub…
The Border Gateway Protocol (BGP) is the routing protocol that keeps the Internet glued together. The public Internet is composed of some 58,000 component networks (BGP calls them “Autonomous Systems” [AS’s]), many of which are very small, while some are very large both in terms of geographical cov…
The Internet was built using an architectural principle of a simple network and agile edges. The basic approach was to assume that the network is a simple collection of buffered switches and circuits. As packets traverse the network they are effectively passed from switch to switch.
Far from being a vibrant environment with an array of competitive offerings, the activity of providing so-called “last mile” Internet access appears to have been reduced to an environment where, in many markets, a small number of access providers appear to operate in a manner that resembles a cosy …
Time for another annual roundup from the world of IP addresses. Let’s see what has changed in the past 12 months in addressing the Internet, and look at how IP address allocation information can inform us of the changing nature of the network itself.
It has become either a tradition or a habit for me that, each January, I report on the experience with the inter-domain routing system over the past year; looking in some detail at metrics from the routing system that can show the essential shape and behaviour of the underlying interconnection fabr…
I am taking a second look at the DNS root servers, this time focusing on the ability to handle large UDP responses over IPv6.