Comment 23 for bug 1501588

(In reply to Wallace Hermano from comment #1)
> I'm using Fedora 22.
> After updating the package wpa_supplicant 2.3 to 2.4 can not connect to the
> wireless network (PEAP-MSCHAPv2, no CA Certificate).
> Please see this thead
> radius-server-incompatibility-with-the-new-wpa/td-p/236602
> After downgrade to 2.3 it works again.

Your issue is likely due to wpa_supplicant enabling TLSv1.2 support (in response to recent attacks against SSLv3, TLSv1.0, and TLSv1.1, like the recent Firefox updates that disabled SSLv3 and TLSv1.0 negotiation). Unfortunately, not all RADIUS servers are prepared for that, and they accept the TLSv1.2 connection but generate a mismatching key than the supplicant does. That bug is in the RADIUS server...

There are some patches floating around that will detect this condition and fall back to the less-secure TLSv1.1 automatically, and we'll probably have to add those to Fedora until the RADIUS server vendors like Cisco, Aruba, etc catch up and fix their products.