I am an assigned INT directorate reviewer for . These comments were written primarily for the benefit of the Internet Area Directors. Document editors and shepherd(s) should treat these comments just like they would treat comments from any other IETF contributors and resolve them along with any other Last Call comments that have been received. For more details on the INT Directorate, see https://datatracker.ietf.org/group/intdir/about/. Based on my review, if I was on the IESG I would ballot this document as NO OBJECTION. Comments: Slightly updated late review. Document has already passed IESG. Link for reference IMPL-OSS-OPEN-SRV6 is empty and should probably be updated before final publication. Extensive interoperability testing has been done through EANTC, though the documentation is not quite as extensive as an IETF Best Current Practice. Section 6.2 contains the following: If an SR source node chooses to compress the SID list, one method is described below for illustrative purposes. Any other method producing a compressed SID list of equal or shorter length than the uncompressed SID list MAY be used. Should this be updated to something like: If an SR source node chooses to compress the SID list, one method is described below for illustrative purposes. Any other method producing a compressed SID list of equal or shorter length than the uncompressed SID list MAY be used if specified in a future draft or draft revision. The rationale for such a change is that if the encoding method is not specified, then interoperability maybe problematic because choosing the appropriate decoding algorithm may be difficult. The current compression method compresses by not keeping copies of some repeated data blocks. It shares some similarities with run length encoding. Run Length Golomb Rice encoding may be better in compression efficiency than the current option, but might require more processor cycles.