Add the -unit command line switch for specifying the tun device.

Warn about -alias being depricated (but still allow it).
Don't moan twice about failing to open any tun device.
Fix a diagnostic and add the -quiet switch to the usage message.

1 files changed, 17 insertions, 1 deletions

diff --git a/usr.sbin/ppp/ppp.8.m4 b/usr.sbin/ppp/ppp.8.m4
index 79f6802..4970a1b 100644
--- a/usr.sbin/ppp/ppp.8.m4
+++ b/usr.sbin/ppp/ppp.8.m4
@@ -8,9 +8,10 @@
 .Nd Point to Point Protocol (a.k.a. user-ppp) 
 .Sh SYNOPSIS
 .Nm
+.Op Fl Va mode
 .Op Fl nat
 .Op Fl quiet
-.Op Fl Va mode
+.Op Fl unit Ns Ar N
 .Op Ar system Ns
 .No ...
 .Sh DESCRIPTION
@@ -48,6 +49,21 @@ flag tells
 to be silent at startup rather than displaying the mode and interface
 to standard output.
 .Pp
+The
+.Fl unit
+flag tells
+.Nm
+to only attempt to open
+.Pa /dev/tun Ns Ar N .
+Normally,
+.Nm
+will start with a value of 0 for
+.Ar N ,
+and keep trying to open a tunnel device by incrementing the value of
+.Ar N
+by one each time until it succeeds.  If it fails three times in a row
+because the device file is missing, it gives up.
+.Pp
 The following
 .Va mode Ns No s
 are understood by