7. Acknowledgements

Thanks to Claudio Allocchio, Adam Barth, Nathaniel Borenstein, Eric Burger, Al Constanzo, Dave Cridland, Ralph Droms, Martin Duerst, Frank Ellermann, J.D. Falk, Ned Freed, Tony Finch, Randall Gellens, Tony Hansen, Ted Hardie, Joe Hildebrand, Alfred Hoenes, Paul Hoffman, Eric Johnson, Scott Kelly, Scott Kitterman, John Klensin, Graham Klyne, Murray Kucherawy, Eliot Lear, John Levine, Bill Manning, Alexey Melnikov, Subramanian Moonesamy, Keith Moore, Ben Niven-Jenkins, Zoltan Ordogh, Tim Petch, Dirk Pranke, Randy Presuhn, Julian Reschke, Dan Romascanu, Doug Royer, Andrew Sullivan, Martin Thomson, Nicolas Williams, Tim Williams, Mykyta Yevstifeyev, and Kurt Zeilenga for their feedback.