Follow-up Comment #5, bug #87887 (project xrootd): I can't really tell if switching to group keytab work by just looking at the message your pasted below. However you can tell if it works by just doing a ls. If the group keytab file works on dual NIC machines, I think the dual NIC issue is actually addressed in the sss module. I notice that your initial keytab file has group "atlas" instead of "usrgroup" (which is a keyword). I don't think it matters but you might want to change that if you got time. _______________________________________________________ Reply to this item at: <http://savannah.cern.ch/bugs/?87887> _______________________________________________ Message sent via/by LCG Savannah http://savannah.cern.ch/