This document has been reviewed as part of the transport area review team's ongoing effort to review key IETF documents. These comments were written primarily for the transport area directors, but are copied to the document's authors and WG to allow them to address any issues raised and also to the IETF discussion list for information. When done at the time of IETF Last Call, the authors should consider this review as part of the last-call comments they receive. Please always CC tsv-art@ietf.org if you reply to or forward this review. I did not see any transport-related issues that require attention. Some of the tests described in this draft use multiple DNS queries, but in all cases, the multiple queries are sequential in that the client performing the request waits for the response (or lack thereof) to a query before proceeding to the next query. With at most one outstanding DNS query at a time, such tests should not cause congestion problems.