I am the assigned Gen-ART reviewer for this draft. For background on Gen-ART, please see the FAQ at <http://wiki.tools.ietf.org/area/gen/trac/wiki/GenArtfaq> Document: draft-ietf-6man-oversized-header-chain-08 Reviewer: Peter Yee Review Date: Oct-16-2013 IETF LC End Date: Oct-16-2013 IESG Telechat date: TBD Summary: This draft is almost ready for publication as a proposed standard but has open issues, described in the review. [Ready with issues] This draft attempts to overcome a potential problem caused by the fragmentation of IPv6 header chains by limiting such chains to fitting within the first fragment. This permits stateless packet filtering firewalls to make an appropriate decision based on a single fragment rather than having to rely on incomplete information that might be present in a first fragment if the header were split across more than one fragment. Major issues: None Minor issues: Page 10, 1st paragraph: the term "improperly-fragmented" is used. Are these truly improperly-fragmented packets or simply ones that are unfriendly to stateless packet filtering? It seems more like the lengthy headers were within spec to date and are now being prohibited to solve a specific problem. Nits: General: use a comma after the terms "e.g." or "i.e" throughout the document. Usage is inconsistent. Page 3, 3rd paragraph: insert "the" between "from" and "IPv6". Page 8, 1st paragraph: replace "a" with "an" before "IPv6 datagram". Page 8, 2nd paragraph: the parenthetical example does not appear to be a good match for the preceding text. It is written as a mechanism that allows the possible maintenance of the status quo rather than giving an example of how the preceding SHOULD might be implemented. E.g., indicates an example of something. Page 8, paragraph 3, 1st sentence: change "requirements" to "requirement". Only one requirement was given and that was that the entire header chain be in the first fragment. Page 8, 3rd paragraph, 2nd sentence: delete the parenthetical statement and the "or not". They are redundant. Page 8, 4th paragraph, 1st sentence: change "requirements" to "requirement" for the same reason given above. Page 8, 5th paragraph, 1st sentence: change "requirements" to "requirement" for the same reason given above. Page 10, 1st paragraph: append a comma after "traditional".