Last week the first Mongolian Network Operators Group meeting was held in Ulaanbaatar. Unfortunately I couldn’t attend but I managed to get a list of the attendees and added their organisations to the IPv6 Survey. No great surprises in the list. Most of the local companies only had IPv6 access through their email systems and only because they were using Google.

I recently tried to post a blog entry after upgrading WordPress from v4 to v5 and discovered that I couldn’t save a draft or publish it. The diagnostic in the console wasn’t all that helpful to me. Entries such as

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://www.mrp.net/blog/index.php?rest_route=%2Fwp%2Fv2%2Fposts%2F255&_locale=user. (Reason: missing token ‘x-http-method-override’ in CORS header ‘Access-Control-Allow-Headers’ from CORS preflight channel).
Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://www.mrp.net/blog/index.php?rest_route=%2Fwp%2Fv2%2Fposts%2F255&_locale=user. (Reason: CORS request did not succeed).

This came as quite a surprise and challenged my ability to work out how to fix it. Fortunately I eventually discovered mention of a change of editor (which I had noticed) and that the old one was available so I installed it and my problem was solved. I still don’t understand what is going on with CORS but I have a viable workaround.