> >and, if we do mbz, they can then write the rfc which changes that > > The problem then is all the implementations -- or firewalls -- that > will check that the bits really are zero upon receipt. If you want > MBZ, say "sender MUST set to zero; receiver and middle boxes MUST NOT > check".
right. > Then you have to hope that folks listen to that part. Especially for > firewalls, I wouldn't count on that. nor I. but clearly stating that routers and firewalls are supposed to ignore Flow Label is probably the best we can do. Keith p.s. I *wish* we had a mechanism for clearly pointing the finger at intermediaries that cause application failures by violating the specs - it would be so wonderful if an application could say "you aren't receiving any incoming mail because your boneheaded network administrator installed a firewall that won't permit SMTP over TLS traffic to pass" complete with a clickable button that says "Terminate Administrator" (and another that says "...With Extreme Prejudice") -------------------------------------------------------------------- IETF IPng Working Group Mailing List IPng Home Page: http://playground.sun.com/ipng FTP archive: ftp://playground.sun.com/pub/ipng Direct all administrative requests to [EMAIL PROTECTED] --------------------------------------------------------------------
