thierry@bino:~$ sudo mv /etc/krb5.conf /etc/krb5.conf.bak
thierry@bino:~$ sudo ln -s /var/lib/samba/private/krb5.conf /etc/
thierry@bino:~$ ls -l /etc/krb5.conf
lrwxrwxrwx 1 root root 32 oct.  26 12:46 /etc/krb5.conf -> /var/lib/samba/private/krb5.conf