I think this is a good idea, just some minor comments.
The draft says that the checksum will usually be constant for a UDP flow. This is nice. For some tunnels it can even be computed at configuration time (when the end-points are determined). I guess the main case where this isn't the case, is when some datagrams are fragmented but not all). Regarding middleboxes. It says: o Middleboxes SHOULD NOT truncate IPv6 datagrams where the IP length exceeds the Length specified in the UDP Header. I guess some middleboxes might currently also just discard them? Or maybe discarding is a kind of truncation :) I also wonder whether it would be better to say MUST? At least they cannot support UDPTT unless it is a MUST. Or at least a MUST when the length is 8. Stig -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------