To be more consistent with other implementations, we now look for
specific keytab entries. The search order for keytabs to be used
for "machine credentials" is now:
+.br
+ <HOSTNAME>$@<REALM>
.br
root/<hostname>@<REALM>
.br
nfs/<anyname>@<REALM>
.br
host/<anyname>@<REALM>
+.IP
+If this search order does not use the correct key then provide a
+keytab file that contains only correct keys.
.TP
.B -p path
Tells