I didn't have any questions on the document as written, and it's worth adding that I'm not a YANG person and was still able to follow the document and the process it describes. 

I did have one question, which might be out of scope for this document. 

I didn't see a mention of APLNs for TLS, and, perhaps more importantly, I don't see a mention of ALPNs, QUIC, or UDP parameters for HTTP/3 over QUIC. It looks like this document is expecting to use NAPTR records, but I thought web servers used RR records to provide ALPN names. My apologies if my question isn't helpful, but is it expected that this document would also cover configuration of ALTO servers listening over HTTP/3?