Hi, As some of you already requested, my slides, both on authorization and IRR distribution, are available at: http://www.isi.edu/~cengiz/talks/ RPSL tutorial slides are available at: http://www.isi.edu/ra/rps/training/ Regards. Cengiz -- Cengiz Alaettinoglu Information Sciences Institute http://www.isi.edu/~cengiz University of Southern California