Hello Everybody, are you already familiar with the IETF draft document "NAT/Firewall NSIS Signaling Layer Protocol (NSLP)" published at the end of June 2006? http://www.ietf.org/internet-drafts/draft-ietf-nsis-nslp-natfw-12.txt I think it is a good input for our second document. Kind regards /Gian Luca