Hello, I am trying to do kerberos (sasl+gssapi) authentication for a hypervisor running libvirt. When I have valid kerberos credentials these errors end up in my logs. I have no idea what this all means. More info is in my bug report https://bugzilla.redhat.com/show_bug.cgi?id=958589 Thank you for your help. 2013-05-08 16:25:30.564+0000: 28934: error : virNetSASLSessionServerStart:533 : authentication failed: Failed to start SASL negotiation: -13 (SASL(-13): authentication failure: GSSAPI Failure: gss_accept_sec_context) 2013-05-08 16:25:30.564+0000: 28934: debug : remoteDispatchAuthSaslStart:2636 : RPC_SERVER_CLIENT_AUTH_FAIL: client=0x716391d0b0 auth=1 2013-05-08 16:25:30.564+0000: 28934: debug : virObjectUnref:258 : OBJECT_UNREF: obj=0x337e4000ba0 2013-05-08 16:25:30.564+0000: 28934: debug : virObjectUnref:260 : OBJECT_DISPOSE: obj=0x337e4000ba0 2013-05-08 16:25:30.564+0000: 28934: error : remoteDispatchAuthSaslStart:2651 : authentication failed: authentication failed 2013-05-08 16:25:30.564+0000: 28934: debug : virNetServerProgramSendError:151 : prog=536903814 ver=1 proc=68 type=1 serial=2 msg=0x716391e480 rerr=0x337f90d9c20 2013-05-08 16:25:30.564+0000: 28934: debug : virNetMessageEncodePayload:364 : Encode length as 180 2013-05-08 16:25:30.564+0000: 28934: debug : virNetServerClientSendMessageLocked:1287 : msg=0x716391e480 proc=68 len=180 offset=0 2013-05-08 16:25:30.564+0000: 28934: debug : virNetServerClientSendMessageLocked:1295 : RPC_SERVER_CLIENT_MSG_TX_QUEUE: client=0x716391d0b0 len=180 prog=536903814 vers=1 proc=68 type=1 status=1 serial=2 2013-05-08 16:25:30.564+0000: 28934: debug : virNetServerClientCalculateHandleMode:148 : tls=(nil) hs=-1, rx=0x71639257d0 tx=0x716391e480 2013-05-08 16:25:30.564+0000: 28934: debug : virNetServerClientCalculateHandleMode:183 : mode=3 2013-05-08 16:25:30.564+0000: 28934: debug : virEventPollUpdateHandle:147 : EVENT_POLL_UPDATE_HANDLE: watch=9 events=3 2013-05-08 16:25:30.564+0000: 28934: debug : virEventPollInterruptLocked:716 : Interrupting