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-tvr-use-cases-04 Reviewer: Behcet Sarikaya Review Date: 2024-02-15 IETF LC End Date: 2024-02-15 IESG Telechat date: 2024-02-29 Summary: This document describes time-variant routing use cases in terms of resource preservation, mainly in IoT, operating efficiency in cellular and campus networks, dynamic reachability mainly in satellite networks. It is expected to serve to bring updates to the routing protocols such as IGP, OSPF, etc. It is well written, makes a good case, especially with effective use of simple diagrams and is ready to go. However I have found a few small issues which can be easily fixed. Major issues: Minor issues: Nits/editorial comments: Section 1. I think that adding a paragraph on what is covered in Section 6 would help. Section 3. .. such a through Solar Panels : I don't understand what is meant here, is it solar LED lights? Section 4. clouds on an optical link : why would cloudy weather affect optical link transmission? Section 5. it seems like the term ground station is used to mean the user antennas. There is also gateway ground stations. Please clarify this. The acronym IGP should be expanded. Section 6. see above my comment on Section 1.