1IPSEC_TNCFG(5)                  [FIXME: manual]                 IPSEC_TNCFG(5)
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NAME

6       ipsec_tncfg - lists IPSEC virtual interfaces attached to real
7       interfaces
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SYNOPSIS

10       ipsec tncfg
11             cat/proc/net/ipsec_tncfg
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OBSOLETE

14       Note that tncfg is only supported on the classic KLIPS stack. It is not
15       supported on any other stack and will be completely removed in future
16       versions. A replacement command still needs to be designed
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DESCRIPTION

19       /proc/net/ipsec_tncfg is a read-only file which lists which IPSEC
20       virtual interfaces are attached to which real interfaces, through which
21       packets will be forwarded once processed by IPSEC.
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23       Each line lists one ipsec I/F. A table entry consists of:
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25       +
26           an ipsec virtual I/F name
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28       +
29           a visual and machine parsable separator ´->´, separating the
30           virtual I/F and the physical I/F,
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32       +
33           a physical I/F name, to which the ipsec virtual I/F is attached or
34           NULL if it is not attached,
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36       +
37           the keyword mtu=,
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39       +
40           the MTU of the ipsec virtual I/F,
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42       +
43           the automatically adjusted effective MTU for PMTU discovery, in
44           brackets,
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46       +
47           a visual and machine parsable separator ´->´, separating the
48           virtual I/F MTU and the physical I/F MTU,
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50       +
51           the MTU of the attached physical I/F.
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EXAMPLES

54       ipsec2 -> eth3 mtu=16260(1443) -> 1500
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56       shows that virtual device ipsec2 with an MTU of 16260 is connected to
57       physical device eth3 with an MTU of 1500 and that the effective MTU as
58       a result of PMTU discovery has been automatically set to 1443.
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60       ipsec0 -> wvlan0 mtu=1400(16260) -> 1500
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62       shows that virtual device ipsec0 with an MTU of 1400 is connected to
63       physical device wvlan0 with an MTU of 1500 and no PMTU packets have
64       gotten far enough to bump down the effective MTU from its default of
65       16260.
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67       ipsec3 -> NULL mtu=0(0) -> 0
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69       shows that virtual device ipsec3 is not connected to any physical
70       device.
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FILES

73       /proc/net/ipsec_tncfg, /usr/local/bin/ipsec
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SEE ALSO

76       ipsec(8), ipsec_manual(8), ipsec_eroute(5), ipsec_spi(5),
77       ipsec_spigrp(5), ipsec_klipsdebug(5), ipsec_tncfg(8), ipsec_version(5),
78       ipsec_pf_key(5)
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HISTORY

81       Written for the Linux FreeS/WAN project <http://www.freeswan.org/> by
82       Richard Guy Briggs.
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86[FIXME: source]                   10/06/2010                    IPSEC_TNCFG(5)
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