--- nos-tun.8	Tue Jul 27 13:48:37 1999
+++ nos-tun.8	Tue Jul 27 13:50:58 1999
@@ -24,6 +24,10 @@ 
 .Ar destination
 .Fl p
 .Ar protocol_number
+.Fl r
+.Ar retry_count
+.Fl w
+.Ar retry_delay
 .Ar target
 .Sh DESCRIPTION
 .Nm Nos-tun
@@ -46,20 +50,34 @@ 
 and
 .Ar destination
 are the addresses used on the tunnel device.
-If you configure the tunnel against a cisco router, use a netmask of
+If you configure the tunnel against a Cisco router, use a netmask of
 .Dq 255.255.255.252
-on the cisco.  This is because the tunnel is a point-to-point interface
+on the Cisco router.  This is because the tunnel is a point-to-point interface
 in the
 .Bx Free
-end, a concept cisco doesn't really implement.
+end, a concept Cisco doesn't really implement.  Destination may be 
+a hostname.
 .Pp
 .Ar Protocol number
 sets tunnel mode. Original KA9Q NOS uses 94 but many peoples use 4
 in worldwide backbone of ampr.org.
 .Pp
+.Ar Retry count
+if provided, limits the number of times 
+.Nm nos-tun
+will attempt to re-establish a tunnel when a connection fails.  Use 0
+for infinite retries.  The default is 10.  When performing a retry, the
+tunnel is shut down and rebuilt, performing name lookups again if 
+applicable.  This allows for building tunnels with static addresses
+across links with dynamic addresses.
+.Pp
+.Ar Retry delay
+Number of seconds to sleep before trying to re-establish a tunnel.
+The default is 60 seconds.
+.Pp
 .Ar Target
 is the address of the remote tunnel device, this must match the source
-address set on the remote end.
+address set on the remote end.  Target may be a hostname.
 .Sh EXAMPLES
 This end, a
 .Bx Free
@@ -68,7 +86,7 @@ 
 nos-tun -t /dev/tun0 -s 192.168.61.1 -d 192.168.61.2 192.168.56.45
 .Ed
 .Pp
-Remote cisco on address 192.168.56.45:
+Remote Cisco router on address 192.168.56.45:
 .Bd -literal -offset indent 4m 
 interface tunnel 0
 ip address 192.168.61.2 255.255.255.252
@@ -85,3 +103,5 @@ 
 wrote the man-page.
 .An Isao SEKI Aq iseki@gongon.com
 added a new flag, IP protocol number.
+.An Nick Johnson
+added retries, -r and -w flags.