This bug was found launching the endurance tests. All them ended properly except for those using the eventlet loop manager. It turned out under particular circumstances when the connections was reset the driver entered in a loop and hanged.
By the logic of gevent it should be possible that this happened in this loop manager as well although the endurance tests ended fine in this case.
We'll rerun the endurance tests for eventlet and gevent to verify that the bug does not persist
The endurance tests were fine, moving this to done