I have reviewed this document as part of the IntArea directorate's ongoing
effort to review all IETF documents being processed by the IESG. Comments that
are not addressed in last call may be included in AD reviews during the IESG
review. Document editors and WG chairs should treat these comments just like
any other last call comments.

Document: draft-ietf-babel-rtt-extension-04
Reviewer: Sheng Jiang
Review Date: 2023-10-11
Result: Ready

This Standards Track document defines an extension to the Babel routing protocol 
that measures the round-trip time (RTT) between routers and makes it possible to
prefer lower latency links over higher latency ones. It is well written and NITs
free.