Excellent, Excellent point. Thanks Christian.  Hello folks :--)
/jim 

> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On 
> Behalf Of Christian Huitema
> Sent: Sunday, September 12, 2004 12:30 PM
> To: Francis Dupont; Soliman, Hesham
> Cc: Brian Haberman; [EMAIL PROTECTED]
> Subject: RE: AH and flow label 
> 
> The suggestions of making the flow label immutable and 
> protecting it by AH look like bad ideas. The 20 bits in the 
> "flow label" are the only reserved bits in the header. These 
> bits should be available for future innovation. If we make 
> them strictly immutable, how will we able to create something 
> like ECN in the future?
> 
> -- Christian Huitema
> 
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