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man: ip-route.8: Add notes about dropped IPv4 route cache 

Signed-off-by: Phil Sutter <phil@nwl.cc>
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Phil Sutter 2016-11-30 09:29:48 +01:00 committed by Stephen Hemminger
parent b9dcf9c282
commit f5f760b812
1 changed files with 6 additions and 0 deletions
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6
man/man8/ip-route.8.in
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@ -924,6 +924,12 @@ routes are left unchanged. Any routes specified in the data stream that
already exist in the table will be ignored.
.RE
.SH NOTES
Starting with Linux kernel version 3.6, there is no routing cache for IPv4
anymore. Hence
.B "ip route show cached"
will never print any entries on systems with this or newer kernel versions.
.SH EXAMPLES
.PP
ip ro