I have been selected as the General Area Review Team (Gen-ART) reviewer for this draft (for background on Gen-ART, please see http://www.alvestrand.no/ietf/gen/art/gen-art-FAQ.html). Please wait for direction from your document shepherd or AD before posting a new version of the draft. Document: draft-ietf-6man-udpzero-06 Reviewer: Richard Barnes Review Date: 2012-10-08 IETF LC End Date: 2012-10-02 IESG Telechat date: 2012-10-11 Summary: Ready Comment: In general, the document is well-written and seems to cover the relevant considerations well. I agree with Barry's DISCUSS that the restrictions in Section 5.1 should be general to all usages of UDP zero checksums, and not specific to tunnels.