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authorthompsa <thompsa@FreeBSD.org>2008-06-20 17:26:34 +0000
committerthompsa <thompsa@FreeBSD.org>2008-06-20 17:26:34 +0000
commit0c235e44e0fb17bd33556dadd61d7697ab1920d5 (patch)
treea90b65055cf5a78462a29c060cc9bd280ab22b9d /sbin/ifconfig/ifconfig.8
parentbf94b8a5bffc3904edd54af89110562e9fe1a2dc (diff)
downloadFreeBSD-src-0c235e44e0fb17bd33556dadd61d7697ab1920d5.zip
FreeBSD-src-0c235e44e0fb17bd33556dadd61d7697ab1920d5.tar.gz
Add support for the optional key in the GRE header.
PR: kern/114714 Submitted by: Cristian KLEIN
Diffstat (limited to 'sbin/ifconfig/ifconfig.8')
-rw-r--r--sbin/ifconfig/ifconfig.812
1 files changed, 11 insertions, 1 deletions
diff --git a/sbin/ifconfig/ifconfig.8 b/sbin/ifconfig/ifconfig.8
index 22adfaa..b7302fc 100644
--- a/sbin/ifconfig/ifconfig.8
+++ b/sbin/ifconfig/ifconfig.8
@@ -28,7 +28,7 @@
.\" From: @(#)ifconfig.8 8.3 (Berkeley) 1/5/94
.\" $FreeBSD$
.\"
-.Dd April 11, 2008
+.Dd June 20, 2008
.Dt IFCONFIG 8
.Os
.Sh NAME
@@ -2011,6 +2011,16 @@ Another name for the
parameter.
.El
.Pp
+The following parameters are specific to GRE tunnel interfaces,
+.Xr gre 4 :
+.Bl -tag -width indent
+.It Cm grekey Ar key
+Configure the GRE key to be used for outgoing packets.
+Note that
+.Xr gre 4 will always accept GRE packets with invalid or absent keys.
+This command will result in a four byte MTU reduction on the interface.
+.El
+.Pp
The following parameters are specific to
.Xr pfsync 4
interfaces:
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