Yesterday I posted a message that said that I agreed with the IPv6 working group chairs that rough consensus was reached to deprecate IPv6 site local addresses. That said, I do have an issue on the discussion that led up to that consensus decision. I do not think there was much of an actual discussion on the topic. The working group chair's presentation on the site local options listed five options for the working group moving forward in regards to the site local question. These options ranged from eliminating site local addresses to fully embracing the concept and working out all the details of how to use them. But they only discussed the middle three options. They reported that the consensus in the Atlanta meeting was to not support outright elimination or full embrace so those options were not included in the chair's presentation of the advantages and disadvantages of the various options. The discussion during the chair's presentation basically did not touch on the pros and cons of having site local addresses per se - a few 'they should just go away' statements were made but no exploration of the issues. The open discussion after the presentation also did not explore the issues but there were a greater number of people who felt that SL addresses should be eliminated from IPv6. As I mentioned in yesterday's note - Thomas and others noticed the sentiment against SL and the chairs wound up asking the question they did (about deprecating SL) as a result. But, for what it's worth, I do not think that there was sufficient discussion of the option of deprecating SL addresses before the consensus check was made. So, in a way, I think the consensus was wrongly reached, even if I agree that consensus was reached. At this point I do not know what to suggest be done. As I will explain in another note, I am in the minority on this topic but even so I'm not sure that much good would come from readdressing the issue. It may be best to stick with the consensus for now and only look at the issue again if it becomes clear that the future usefulness of IPv6 depends on the IETF understanding the use of private addressing in IPv6, and that may never happen.