I did the following tests this morning:
First login with freshly started sssd online, works fine
Repeat login still online, works fine, however, the suspicious logfile-entry cited above
Go offline, repeat login, fail, again sssd fails to match user and certificate user
Now it looks like sssd has a problem obtaining necessary information from the cache
I've prepared three logfiles for the three login attempts listed above, but they are
huge. Is there a way to upload them as attachments?