Comment 5 for bug 966734

Ok. I think this is almost certainly a bug in the software somewhere, not just a misconfiguration, but I'm of no help in figuring it out; I only use RPCSEC_GSS here because even if this particular issue is an implementation bug, there are plenty of other problems with AUTH_SYS that are fundamental limitations. So in the long term you're better off migrating to RPCSEC_GSS regardless of whether we manage to fix this bug.