Karl Auer has over 25 years experience in IT in Australia and Europe on large networks, and is a regular contributor to several IPv6- and network security-related forums including gogo6 and NANOG.
Karl gave a talk on IPv6 Addressing and a tutorial on IPv6 security at the 2012 Australian IPv6 Summit and has had several articles published in Computerworld and CSO on IPv6 and security.
He also maintains a blog containing, amongst other things, his musings on IPv6.