update tunnelttl to talk about the "copy" argument

diff --git a/sbin/ifconfig/ifconfig.8 b/sbin/ifconfig/ifconfig.8
index f928767..68f2491 100644 (file)
--- a/sbin/ifconfig/ifconfig.8
+++ b/sbin/ifconfig/ifconfig.8
@@ -1,4 +1,4 @@
-.\"    $OpenBSD: ifconfig.8,v 1.298 2018/02/10 05:55:26 florian Exp $
+.\"    $OpenBSD: ifconfig.8,v 1.299 2018/02/15 04:21:46 dlg 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: February 10 2018 $
+.Dd $Mdocdate: February 15 2018 $
 .Dt IFCONFIG 8
 .Os
 .Sh NAME
@@ -1603,6 +1603,7 @@ for a complete list of the available protocols.
 .Op Oo Fl Oc Ns Cm keepalive Ar period count
 .Op Oo Fl Oc Ns Cm tunnel Ar src_address dest_address
 .Op Cm tunneldomain Ar tableid
+.Op Cm tunnelttl Ar ttl
 .Op Oo Fl Oc Ns Cm vnetid Ar network-id
 .Ek
 .nr nS 0
@@ -1655,6 +1656,11 @@ can be set to any valid routing table ID;
 the corresponding routing domain is derived from this table.
 .It Cm tunnelttl Ar ttl
 Set the IP or multicast TTL of the tunnel packets.
+If supported by the tunnel protocol,
+the value can also be set to
+.Ar copy
+to have the TTL copied between the encapsulated protocol headers
+and the tunnel protocol headers.
 .It Cm vnetid Ar network-id
 Set the virtual network identifier.
 This is a number which is used by tunnel protocols such as