Comment 87 for bug 969343

rcmd: the issues you're seeing are related to roaming, and not that patch (or at least, not "without any doubt"). What reason 17 means is that the AP can't handle new stations; which probably means it's overloaded.

FWIW, I can always add the extra other setting (SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION) from the patch on the bug, but I'm still not sure this will cover all the issues, and it's still not really confirmed by the wpa developers. I'll prepare a new package in my PPA soon and give it a test myself next week just to make sure it doesn't break connections that I know work properly.