rpc.gssd \- RPCSEC_GSS daemon
.SH SYNOPSIS
.B rpc.gssd
-.RB [ \-fMnlvr ]
+.RB [ \-DfMnlvr ]
.RB [ \-k
.IR keytab ]
.RB [ \-p
.BR rpc.gssd .
.SH OPTIONS
.TP
+.B -D
+DNS Reverse lookups are not used for determining the
+server names pass to GSSAPI. This option will reverses that and forces
+the use of DNS Reverse resolution of the server's IP address to
+retrieve the server name to use in GSAPI authentication.
+.TP
.B -f
Runs
.B rpc.gssd