----- Original Message ----- From: "Brian E Carpenter" <[EMAIL PROTECTED]> To: "Robert Elz" <[EMAIL PROTECTED]> Cc: "Steven M. Bellovin" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>; "Subrata Goswami" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Thursday, January 17, 2002 3:45 AM Subject: Re: Flow Label
> In any case, the behaviour when you see an "unknown" flow label should be > the same as when you see a zero label - apply default treatment, whatever > that happens to be locally. No need to either drop the packet or > rewrite the label; at that point it's just a noise field. > One person's noise may be another person's data. The IPv6++ Headers use the 20 unsed bits in the first word for a 4 bit (in-Header) Data Length field. The other 16 bits are used for the StarGate, which is the Exclusive OR of the SRC and DST StarGates. Each end knows their StarGate so they can derive the other end's StarGate from the value carried in the field that may look like "noise". Jim Fleming 2002:[IPv4]:000X:03DB http://www.IPv8.info -------------------------------------------------------------------- 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] --------------------------------------------------------------------
