If the rpcsec_gss library supports setting debug level,
increases the verbosity of the output (can be specified multiple times).
.TP
+.B -R realm
+Kerberos tickets from this
+.I realm
+will be preferred when scanning available credentials cache files to be
+used to create a context. By default, the default realm, as configured
+in the Kerberos configuration file, is preferred.
+.TP
.B -t timeout
Timeout, in seconds, for kernel gss contexts. This option allows you to force
new kernel contexts to be negotiated after