This is an OPS-DIR review of “Network Service Header Metadata Type 2 Variable-Length Context Headers” <draft-ietf-sfc-nsh-tlv>

This document defines a number of context headers that may be used in Service Function Chaining.

The document is very straightforward – simply providing formats for the headers to be used in specific situations and identifying a set of forwarding context types along with instructions to the IANA to set up registries for them.  

I found the document easy to understand and I did not identify any operations-specific issues (or any other issues for that matter).