nfs mount output client

Apr  6 12:03:27 tom-desktop rpc.gssd[888]: handling krb5 upcall
Apr  6 12:03:27 tom-desktop rpc.gssd[888]: getting credentials for client with uid 0 for server dnsdhcp.swt.wiai.uni-bamberg.de
Apr  6 12:03:27 tom-desktop rpc.gssd[888]: CC file '/tmp/krb5cc_10002_H6OYu0' being considered, with preferred realm 'SWT.WIAI.UNI-BAMBERG.DE'
Apr  6 12:03:27 tom-desktop rpc.gssd[888]: CC file '/tmp/krb5cc_10002_H6OYu0' owned by 10002, not 0
Apr  6 12:03:27 tom-desktop rpc.gssd[888]: WARNING: Failed to create krb5 context for user with uid 0 for server dnsdhcp.swt.wiai.uni-bamberg.de
Apr  6 12:03:27 tom-desktop rpc.gssd[888]: doing error downcall
Apr  6 12:03:27 tom-desktop rpc.gssd[888]: destroying client clnt9
Apr  6 12:03:27 tom-desktop kernel: [152049.724231] NFS: nfs mount opts='sec=krb5p,clientaddr=141.13.200.112,addr=141.13.200.10'
Apr  6 12:03:27 tom-desktop kernel: [152049.724242] NFS:   parsing nfs mount option 'sec=krb5p'
Apr  6 12:03:27 tom-desktop kernel: [152049.724248] NFS: parsing sec=krb5p option
Apr  6 12:03:27 tom-desktop kernel: [152049.724251] NFS:   parsing nfs mount option 'clientaddr=141.13.200.112'
Apr  6 12:03:27 tom-desktop kernel: [152049.724256] NFS:   parsing nfs mount option 'addr=141.13.200.10'
Apr  6 12:03:27 tom-desktop kernel: [152049.724262] NFS: MNTPATH: '/'
Apr  6 12:03:27 tom-desktop kernel: [152049.724264] --> nfs4_try_mount()
Apr  6 12:03:27 tom-desktop kernel: [152049.724270] --> nfs4_create_server()
Apr  6 12:03:27 tom-desktop kernel: [152049.724281] --> nfs4_init_server()
Apr  6 12:03:27 tom-desktop kernel: [152049.724283] --> nfs4_set_client()
Apr  6 12:03:27 tom-desktop kernel: [152049.724285] --> nfs_get_client(dnsdhcp,v4)
Apr  6 12:03:27 tom-desktop kernel: [152049.724290] --> nfs_get_client() = ffff88001e44cc00 [new]
Apr  6 12:03:27 tom-desktop kernel: [152049.728563] NFS: Callback listener port = 43508 (af 2)
Apr  6 12:03:27 tom-desktop kernel: [152049.728582] NFS: Callback listener port = 47170 (af 10)
Apr  6 12:03:27 tom-desktop kernel: [152049.728619] <-- nfs4_set_client() = 0 [new ffff88001e44cc00]
Apr  6 12:03:27 tom-desktop kernel: [152049.728658] <-- nfs4_init_server() = 0
Apr  6 12:03:27 tom-desktop kernel: [152049.728660] --> nfs4_path_walk(,,/)
Apr  6 12:03:27 tom-desktop kernel: [152049.728881] nfs4_get_root: getroot error = 13
Apr  6 12:03:27 tom-desktop kernel: [152049.728884] --> nfs_free_server()
Apr  6 12:03:27 tom-desktop kernel: [152049.728907] --> nfs_put_client({1})
Apr  6 12:03:27 tom-desktop kernel: [152049.728909] --> nfs_free_client(4)
Apr  6 12:03:27 tom-desktop kernel: [152049.729734] <-- nfs_free_client()
Apr  6 12:03:27 tom-desktop kernel: [152049.729741] <-- nfs_free_server()
Apr  6 12:03:27 tom-desktop kernel: [152049.729743] <-- nfs4_create_server() = error -13
Apr  6 12:03:27 tom-desktop kernel: [152049.729748] <-- nfs4_try_mount() = -13 [error]
Apr  6 12:03:27 tom-desktop kernel: [152049.729750] <-- nfs4_get_sb() = -13 [error]
Apr  6 12:03:27 tom-desktop rpc.gssd[888]: destroying client clnt8