Re: [Mip4] 3344bis clarification on identifying the FA's SA

At 10:26 AM 1/24/2005 -0600, Pete McCann wrote:

>Hi, all,
>
>Kent Leung writes:
>  > Hi Henrik.
>  >
>  > At 01:33 AM 1/20/2005 +0100, Henrik Levkowetz wrote:
>  >
>  >
>  > >I suspect that the reason this has not been raised before is that before
>  > >we introduced NAT traversal into the equation, it was an unstated
>  > >assumption that the source IP address and the CoA address would be 
> the same.
>  >
>  > KL>
>  >
>  > Actually, RFC 2002/3344 states to use the egress interface's IP 
> address as the
>  > source IP address of the RRQ  (sect. 3.7.2.2).  When RFC 3519 was 
> introduced,
>  > the mandate for the addressed to be the same was added.
>
>Clearly, this only applies when using an FA-located CoA, right?
>For Co-located CoA (in an R-bit environment) the FA must relay the
>message with a different source IP address and CoA.

Yes. The behavior of the R-bit is documented in Sect. 4.11 in RFC 3519.

Kent

--
      |           |                   Kent Leung
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