Document the new mpe interface and explain the appropriate commands

in ifconfig(8). The man pages reference mpls(8) which doesn't exist,
but claudio promises it will follow shortly.
a thumb up and ok from claudio@

1 files changed, 24 insertions, 3 deletions

diff --git a/sbin/ifconfig/ifconfig.8 b/sbin/ifconfig/ifconfig.8
index 629774156a2..0ad7afdeb42 100644
--- a/sbin/ifconfig/ifconfig.8
+++ b/sbin/ifconfig/ifconfig.8
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: ifconfig.8,v 1.157 2008/04/18 17:01:50 damien Exp $
+.\"	$OpenBSD: ifconfig.8,v 1.158 2008/05/07 02:43:45 pyr Exp $
 .\"	$NetBSD: ifconfig.8,v 1.11 1996/01/04 21:27:29 pk Exp $
 .\"     $FreeBSD: ifconfig.8,v 1.16 1998/02/01 07:03:29 steve Exp $
 .\"
@@ -31,7 +31,7 @@
 .\"
 .\"     @(#)ifconfig.8	8.4 (Berkeley) 6/1/94
 .\"
-.Dd $Mdocdate: April 18 2008 $
+.Dd $Mdocdate: May 7 2008 $
 .Dt IFCONFIG 8
 .Os
 .Sh NAME
@@ -189,7 +189,8 @@ At least the following devices can be created on demand:
 .Xr sl 4 ,
 .Xr trunk 4 ,
 .Xr tun 4 ,
-.Xr vlan 4
+.Xr vlan 4,
+.Xr mpe 4
 .It Cm debug
 Enable driver-dependent debugging code; usually, this turns on
 extra console error logging.
@@ -441,6 +442,8 @@ and
 .Xr gre 4 )
 .It
 .Xr vlan 4
+.It
+.Xr mpe 4
 .El
 .\" CARP
 .Sh CARP
@@ -1131,6 +1134,24 @@ to
 This value is a 3-bit number which is used to create an 802.1Q
 vlan header for packets sent from the vlan interface.
 .El
+.\" MPE
+.Sh MPE
+.Nm ifconfig
+.Bk -words
+.Ar mpe-interface
+.Op Cm mplslabel Ar mpls-label
+.Ek
+.Pp
+The options are as follows:
+.Bl -tag -width Ds
+.It Cm mplslabel Ar mpls-label
+If the interface is a
+.Xr mpe 4
+pseudo-interface, set the mpls label to
+.Ar mpls-label .
+This value is a 20-bit number which will be used as the MPLS header for
+packets entering the MPLS domain.
+.El
 .Sh EXAMPLES
 Assign the
 address of 192.168.1.10 with a network mask of