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>. Please resolve these comments along with any other Last Call comments you may receive. Document: draft-housley-ct-keypackage-receipt-n-error-05 Reviewer: Robert Sparks Review Date: 26 Nov 2013 IETF LC End Date: 27 Nov 2013 IESG Telechat date: not yet scheduled Summary: Ready Two nit-level comments: I found the formulation 'The key package error content type MUST be signed if the entity generating it is capable of signing it' awkward. Protocols break if you don't follow a MUST. As written, this says its ok to break the protocol. Is this, instead, really trying to say something about the thing that's going to evaluate the error content type (like "expect a signature unless you're explicitly configured to allow a lack of one")? The word "above" in "Error codes above this point" is ambiguous. It can mean either "earlier in the document" or "with numbers greater than this value". That ambiguity may be harmless (it's easy to resolve by looking at the referenced document), but if you want to remove it, I suggest saying "The error codes listed here with values <=33".