Fall 2006 - 67th IETF November 5-10, 2006 Location: San Diego, CA, USA Spring 2007 - 68th IETF March 18-23, 2007 Host: TBD Location: Prague, Czech Republic Summer 2007 - 69th IETF July 22-27, 2007 Host: TBD Location: Chicago, IL, USA