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-.TH IPSEC_TNCFG 5 "27 Jun 2000"
-.\"
-.\" RCSID $Id: tncfg.5,v 1.1 2004/03/15 20:35:31 as Exp $
-.\"
-.SH NAME
-ipsec_tncfg \- lists IPSEC virtual interfaces attached to real interfaces
-.SH SYNOPSIS
-.B ipsec
-.B tncfg
-.PP
-.B cat
-.B /proc/net/ipsec_tncfg
-.SH DESCRIPTION
-.I /proc/net/ipsec_tncfg
-is a read-only file which lists which IPSEC virtual interfaces are
-attached to which real interfaces, through which packets will be
-forwarded once processed by IPSEC.
-.PP
-Each line lists one ipsec I/F.
-A table entry consists of:
-.IP + 3
-an ipsec virtual I/F name
-.IP +
-a visual and machine parsable separator '->', separating the virtual I/F
-and the physical I/F,
-.IP +
-a physical I/F name, to which the ipsec virtual I/F is attached or NULL
-if it is not attached,
-.IP +
-the keyword
-.BR mtu= ,
-.IP +
-the MTU of the ipsec virtual I/F,
-.IP +
-the automatically adjusted effective MTU for PMTU discovery, in brackets,
-.IP +
-a visual and machine parsable separator '->', separating the virtual I/F
-MTU and the physical I/F MTU,
-.IP +
-the MTU of the attached physical I/F.
-.BR
-.SH EXAMPLES
-.TP
-.B ipsec2 -> eth3 mtu=16260(1443) -> 1500
-.LP
-shows that virtual device
-.B ipsec2
-with an MTU of
-.B 16260
-is connected to physical device
-.B eth3
-with an MTU of
-.B 1500
-and that the effective MTU as a result of PMTU discovery has been
-automatically set to
-.BR 1443.
-.TP
-.B ipsec0 \-> wvlan0 mtu=1400(16260) \-> 1500
-.LP
-shows that virtual device
-.B ipsec0
-with an MTU of
-.B 1400
-is connected to physical device
-.B wvlan0
-with an MTU of
-.B 1500
-and no PMTU packets have gotten far enough to bump down the effective MTU
-from its default of 16260.
-.TP
-.B ipsec3 \-> NULL mtu=0(0) \-> 0
-.LP
-shows that virtual device
-.B ipsec3
-is not connected to any physical device.
-.LP
-.SH "FILES"
-/proc/net/ipsec_tncfg, /usr/local/bin/ipsec
-.SH "SEE ALSO"
-ipsec(8), ipsec_manual(8), ipsec_eroute(5), ipsec_spi(5),
-ipsec_spigrp(5), ipsec_klipsdebug(5), ipsec_tncfg(8), ipsec_version(5),
-ipsec_pf_key(5)
-.SH HISTORY
-Written for the Linux FreeS/WAN project
-<http://www.freeswan.org/>
-by Richard Guy Briggs.
-.\"
-.\" $Log: tncfg.5,v $
-.\" Revision 1.1 2004/03/15 20:35:31 as
-.\" added files from freeswan-2.04-x509-1.5.3
-.\"
-.\" Revision 1.5 2002/04/24 07:35:41 mcr
-.\" Moved from ./klips/utils/tncfg.5,v
-.\"
-.\" Revision 1.4 2001/05/29 05:15:53 rgb
-.\" Added PMTU to output format.
-.\"
-.\" Revision 1.3 2000/06/30 18:21:55 rgb
-.\" Update SEE ALSO sections to include ipsec_version(5) and ipsec_pf_key(5)
-.\" and correct FILES sections to no longer refer to /dev/ipsec which has
-.\" been removed since PF_KEY does not use it.
-.\"
-.\" Revision 1.2 2000/06/28 12:44:12 henry
-.\" format touchup
-.\"
-.\" Revision 1.1 2000/06/28 05:43:01 rgb
-.\" Added manpages for all 5 klips utils.
-.\"
-.\"