Das mit den Locales hat es nicht gebracht, da ist sowohl auf dem nas als auch auf dem PC die gleiche:
PC:$ echo $LANG de_DE.utf8 nas: $ echo $LANG de_DE.UTF-8 But a workaround is documented in this Bug https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=790880 which has been merged here. This states: Using "mount.nfs" instead allows mounting by a user: Executing mount.nfs as a user with full path does not respect the mountpoint as configured in fstab: ~$ /sbin/mount.nfs leo:/Bilder ~$ mount.nfs: no mount point provided Adding the mountpoint works for both mount and umount: ~$ /sbin/mount.nfs leo:/Bilder /home/ingo/leo.Bilder ~$ /sbin/umount.nfs /home/ingo/leo.Bilder That's why I assigned it also to Package: mount. Today I checkes in Stretch: still the same issue.
