I had a working MfE setup to sync cal/contacts with google. As of this week, it stopped working. It returns failure immediately, as if it doesn't even try

Yes, I know this isn't supported. Yes I know about the trick to clear the n900 calendar. It has been working fine for more than a year, with the occasional hiccup which needed me to clean my n900 calendar to fix.

This is different.

The only thing I can think of is that I updated to the latest CSSU (up from the previous oe), and that maybe google enabled ipv6?

Any hints or share your experience?