I am the assigned Gen-ART reviewer for this draft. The General Area Review Team (Gen-ART) reviews all IETF documents being processed by the IESG for the IETF Chair. Please treat these comments just like any other last call comments. For more information, please see the FAQ at . Document: draft-ietf-idr-flow-spec-v6-17 Reviewer: Dale R. Worley Review Date: 2020-10-25 IETF LC End Date: 2020-10-21 IESG Telechat date: 2020-11-05 Summary: This draft is ready for publication as a Standards Track RFC. Nits/editorial comments: 3.1. Type 1 - Destination IPv6 Prefix 3.2. Type 2 - Source IPv6 Prefix Unlike IPv4, it is plausible that a set of flows could be determined by two contiguous sections of an address, e.g., an initial prefix and a subset of bits within an embedded IPv4 address. By draft-ietf-idr-rfc5575bis-26 section 4.2, an IPv6 flow specification may not contain two Destination IPv6 Prefix or two Source IPv6 Prefix components, so this type of selection cannot be specified. 4. Ordering of Flow Specifications If the offsets are not equal, the lowest offset has precedence, as this flow matches the most significant bit. "as this flow" should be "as this flow specification" 5. Validation Procedure a) A destination prefix component with offset=0 is embedded in the Flow Specification I note that this requirement has no functional effect, as a destination prefix with length = 0 can always be added to a flow specification without effect. However, this observation also applies to IPv4 flow specifications, so I assume it has been given due consideration. [END]