WOW update: The operation was canceled

[freddie]

I'm seeing a lot of these messages in MXDiags. Does this indicate a problem at my end or at the WOW end? I only noticed because today was a rare occasion when I looked at my data in WOW and noticed it has been missing since approx. 2200 UTC yesterday.

[Dennisdg]

I see a few of these errors most days

Response: ERROR - Response code = ServiceUnavailable, body = The service is unavailable.

Probably not your end.

[HansR]

Afaics it is usually at the WOW end. As if they don't have the capacity to handle a lot of requests (for catching e.g.)

[freddie]

Hmm, it may well have been my end. I had a couple of short-lived outages to my Internet service yesterday evening, and when the service resumed I noticed that IPv6 functionality was not working. I use a dual-stack network and the preference is for IPv6, so the DNS request for WOW by MX was likely for a AAAA record - which would have timed out, probably a longer TTL than MX waited for. Anyway, IPv6 functionality resumed at 09:53 UTC and the 10:00 WOW request worked, whereas the 09:50 request returned "The operation was canceled" (sic) error message.

So it's either been fixed by this or it is a mighty coincidence