Due to a bug in the debug output the winbindd daemon crashes as soon as the network connection is dropped. I'm attaching a patch which solves the issue.
A fix for this is now building in autobuild.
Created attachment 9520 [details] backport for 4.1
Karolin, please add to 4.1. Thanks.
Pushed to autobuild-v4-1-test.
Pushed to v4-1-test. Closing out bug report. Thanks!