I am completing this review as a representative of the ops directorate. This document describes an NMDA-compliant version of the ietf-routing family of YANG modules that obsoletes the revisions in RFC8022. Overall, I feel this document is ready, with some very minor spelling nits. The only substantive comment I have is in the comments ahead of the now-obsolete state branches. Currently, these comments just state "Obsolete State Data". I wonder if it would make sense to add a bit more text here to reference why these branches are now obsolete. Perhaps a reference to the NMDA document would be beneficial. Spelling-wise, search for Managment. There are four instances in the YANG modules themselves. Obviously, these should be "Management". Another minor nit I noticed (and this is likely an issue with pyang) is that when using a grouping, the YANG tree lists nodes like routing-state -> router-id with a '+' instead of a 'o' (i.e., indicating obsolete). Not a big deal since the parent container is obsolete. One comment I have is that the imports clauses here definitely point out a need to be able to import by some kind of version that will allow to set a minimum requirement (e.g., import by semantic version). Having comments such as are in the modules now are not machine-consumable, and will likely cause operational challenges for those that do not pay attention.