Hi,Thanks, Tom, for submitting the the draft. Everyone, please take a look at this version and send comments.
Checksum calculation was discussed on the list last November to quite some extent. What do people think, is the current version (i.e., applying UDP length for partial checksum calculation logic, always include UDP/DCCP header) acceptable?
In addition, to perform some primitive issue tracking, I think the following points were raised earlier on the mailing list, but according to my reading are not addressed yet:
* make a note this mode is not valid for IPv6 -- Gorry / 2009-11-20 (PS: I'm not sure if "this mode" referred to checksums, or the draft overall, and not sure I understand what "not valid" means. Hopefully UDP encapsulation is not necessary with IPv6, but technically it could be done, right?) * worth considering a straight UDP encapsulation that does not adjust the position and order of the fields. -- Gorry / 2009-11-20 * essential that any encapsulation draft also notes the drawbacks of this mode, and hence advocates native transport were possible (e.g. No currently defined support for ECN, No currently defined support for shared PMTUD, Restricted support for partial coverage) -- Gorry / 2009-11-20 (please shout if there was something in the past discussion I missed) Tom (& others), do you have opinions about the points above? - Pasi Begin forwarded message:
From: Internet-Drafts@xxxxxxxx Date: February 11, 2010 9:15:02 AM PST To: i-d-announce@xxxxxxxx Cc: dccp@xxxxxxxx Subject: I-D Action:draft-ietf-dccp-udpencap-00.txtA New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Datagram Congestion Control Protocol Working Group of the IETF.Title : Datagram Congestion Control Protocol (DCCP) Encapsulation for NAT Traversal (DCCP-NAT)Author(s) : T. Phelan Filename : draft-ietf-dccp-udpencap-00.txt Pages : 11 Date : 2010-02-11 This document specifies an alternative encapsulation of the Datagram Congestion Control Protocol (DCCP), referred to as DCCP-NAT. This encapsulation will allow DCCP to be carried through the current generation of Network Address Translation (NAT) middleboxes without modification of those middleboxes. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-dccp-udpencap-00.txt Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ Below is the data which will enable a MIME compliant mail reader implementation to automatically retrieve the ASCII version of the Internet-Draft.
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