ipsec_tncfg (8) ( Разные man: Команды системного администрирования )
NAME
ipsec_tncfg - lists IPSEC virtual interfaces attached to real interfaces
SYNOPSIS
ipsectncfg
cat/proc/net/ipsec_tncfg
DESCRIPTION
/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.
Each line lists one ipsec I/F.
A table entry consists of:
+
an ipsec virtual I/F name
+
a visual and machine parsable separator '->', separating the virtual I/F
and the physical I/F,
+
a physical I/F name, to which the ipsec virtual I/F is attached or NULL
if it is not attached,
+
the keyword
mtu=,
+
the MTU of the ipsec virtual I/F,
+
the automatically adjusted effective MTU for PMTU discovery, in brackets,
+
a visual and machine parsable separator '->', separating the virtual I/F
MTU and the physical I/F MTU,
+
the MTU of the attached physical I/F.
.SHEXAMPLES
ipsec2 -> eth3 mtu=16260(1443) -> 1500
shows that virtual device
ipsec2
with an MTU of
16260
is connected to physical device
eth3
with an MTU of
1500
and that the effective MTU as a result of PMTU discovery has been
automatically set to
1443.
ipsec0 -> wvlan0 mtu=1400(16260) -> 1500
shows that virtual device
ipsec0
with an MTU of
1400
is connected to physical device
wvlan0
with an MTU of
1500
and no PMTU packets have gotten far enough to bump down the effective MTU
from its default of 16260.
ipsec3 -> NULL mtu=0(0) -> 0
shows that virtual device
ipsec3
is not connected to any physical device.
