.RB [ \-D ]
.RB [ \-d
.IR dir ]
+.RB [ \-b
+.IR addr ]
.RB [ \-p
.IR port ]
+.br
+
.RB [ \-U
.IR user ]
.RB [ \-G
.IR group ]
+.RB [ \-a
+.IR socket ]
+.RB [ \-T
+.IR trace-opts ]
.br
.RB [ \-k
.IR pub-keyring ]
.RB [ \-t
.IR key-tag ]
-.br
-
-.RB [ \-a
-.IR socket ]
-.RB [ \-T
-.IR trace-opts ]
.SH "DESCRIPTION"
The
.B tripe
.B .
if you don't want it to change directory at all.
.TP
+.BI "\-b, \-\-bind-address="addr
+Bind the UDP socket to IP address
+.I addr
+rather than the default of
+.BR INADDR_ANY .
+This is useful if your main globally-routable IP address is one you want
+to tunnel through the VPN.
+.TP
.BI "\-p, \-\-port=" port
Use the specified UDP port for all communications with peers, rather
than an arbitarary kernel-assigned port.