Subject: RE: [Tsvwg] Question about special case for changing an address i n SCTP-AddIP

From: Tuexen Michael <[email-masked]>
Date: Thu, 13 Jun 2002 15:00:14 +0200

Simon,

you want to look at
http://www.ietf.org/internet-drafts/draft-riegel-tuexen-mobile-sctp-00.txt

If you have further questions, do not hesitate to contact me.

Best regards
Michael

Michael Tuexen    Tel.:   +49 89 722 47210
Siemens AG        Fax:    +49 89 722 48212
ICN WN CC SE 7    e-Mail: [email-masked]

> -----Original Message-----
> From: Randall Stewart [mailto:[email-masked]]
> Sent: Wednesday, June 12, 2002 5:27 PM
> To: [email-masked]
> Cc: [email-masked]
> Subject: Re: [Tsvwg] Question about special case for changing 
> an address
> in SCTP-AddIP
> 
> 
> Simon:
> 
> One very good example of this would be where you have an
> IPv6 renumber occur... and the former address is no
> longer valid to source from. In this case you would stuff
> the old address in to the address TLV so the peer has
> a lookup mechanism. In fact one could even think about
> using this address to always lookup the association the
> more I think on it.. since you would never have a
> lookup/miss-lookup/find..
> 
> 
> There are other places it can be used as well... Michael Tuexen as
> enumerated a few in his draft :>
> 
> R
> 
> [email-masked] wrote:
> > 
> > Hi List,
> > 
> > In <draft-ietf-tsvwg-addip-sctp-05.txt>, we have:
> > 
> > 4.3.2 A special case for changing an address.
> > 
> > The receiver of such a chunk MUST always first use the 
> source address
> >     found in the IP header in looking up the association.  The
> >     receiver should attempt to use the address found in the Address
> >     Bytes field only if the lookup fails using the source 
> address from
> >     the IP header.  The receiver MUST reply to the source address
> >     of the packet in this case which is the new address that
> >     was added by the ASCONF (since the old address is no 
> longer a part
> >     of the association after processing).
> > 
> > My question is: why the sender of this ASCONF can use the 
> new address as
> > source
> > address before it receives ASCONF-ACK?
> > 
> > Simon
> > 
> > _______________________________________________
> > tsvwg mailing list
> > [email-masked]
> > https://www1.ietf.org/mailman/listinfo/tsvwg
> 
> -- 
> Randall R. Stewart
> [email-masked] 815-342-5222 (cell phone)
> 
> _______________________________________________
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> 

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