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We have home directories mounted from /etc/fstab with:
home:/vol/home_ph1      /cs/home_ph1    nfs4    sec=krb5,rw 0 0

This worked until this morning when I updated to nfs-client-1.2.1-8.3.1

This affected 11.3 systems using kernel 2.6.34.7-0.5-default and
2.6.34.7-0.5-desktop.

Many other systems running openSUSE 11.2, which did not get the
nfs-client update, still mount /cs/home_ph1 with no problem.
No change on the server side, as far as we know.

Reproducible: Always

Steps to Reproduce:
1. Kerberized NFS4 setup is quite complex, don't think I can reproduce the steps in a simple list like this.
2. Took a system that mounts home:/vol/home_ph1, ran "yast2 online_update"
3. Same system now fails to mount home:/vol/home_ph1.
Actual Results:  
/root # mount -vvv /cs/home_ph1                                                                  
mount: fstab path: "/etc/fstab"                                                                  
mount: mtab path:  "/etc/mtab"
mount: lock path:  "/etc/mtab~"
mount: temp path:  "/etc/mtab.tmp"
mount: UID:        0
mount: eUID:       0
mount: spec:  "home:/vol/home_ph1"
mount: node:  "/cs/home_ph1"
mount: types: "nfs4"
mount: opts:  "sec=krb5,rw"
mount: external mount: argv[0] = "/sbin/mount.nfs4"
mount: external mount: argv[1] = "home:/vol/home_ph1"
mount: external mount: argv[2] = "/cs/home_ph1"
mount: external mount: argv[3] = "-v"
mount: external mount: argv[4] = "-o"
mount: external mount: argv[5] = "rw,sec=krb5"
mount.nfs4: timeout set for Mon Dec  6 12:46:23 2010
mount.nfs4: trying text-based options 'sec=krb5,addr=10.111.42.120,clientaddr=140.107.168.89'
mount.nfs4: mount(2): Permission denied
mount.nfs4: access denied by server while mounting home:/vol/home_ph1

Expected Results:  
This is from an 11.2 system, since all my 11.3 systems have the problem.
/root # mount -vvv /cs/home_ph1
mount: fstab path: "/etc/fstab"
mount: mtab path:  "/etc/mtab"
mount: lock path:  "/etc/mtab~"
mount: temp path:  "/etc/mtab.tmp"
mount: UID:        0
mount: eUID:       0
mount: spec:  "home:/vol/home_ph1"
mount: node:  "/cs/home_ph1"
mount: types: "nfs4"
mount: opts:  "sec=krb5,rw"
mount: external mount: argv[0] = "/sbin/mount.nfs4"
mount: external mount: argv[1] = "home:/vol/home_ph1"
mount: external mount: argv[2] = "/cs/home_ph1"
mount: external mount: argv[3] = "-v"
mount: external mount: argv[4] = "-o"
mount: external mount: argv[5] = "rw,sec=krb5"
mount.nfs4: timeout set for Mon Dec  6 13:25:05 2010
mount.nfs4: text-based options: 'sec=krb5,clientaddr=140.107.142.161,addr=10.111.42.120'
home:/vol/home_ph1 on /cs/home_ph1 type nfs4 (rw,sec=krb5)