From mboxrd@z Thu Jan 1 00:00:00 1970 From: Phil Sutter Subject: [iproute PATCH] man: ip-route.8: Add notes about dropped IPv4 route cache Date: Wed, 30 Nov 2016 09:29:48 +0100 Message-ID: <20161130082948.21925-1-phil@nwl.cc> Cc: netdev@vger.kernel.org To: Stephen Hemminger Return-path: Received: from orbyte.nwl.cc ([151.80.46.58]:34862 "EHLO mail.nwl.cc" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753042AbcK3IaA (ORCPT ); Wed, 30 Nov 2016 03:30:00 -0500 Sender: netdev-owner@vger.kernel.org List-ID: Signed-off-by: Phil Sutter --- man/man8/ip-route.8.in | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/man/man8/ip-route.8.in b/man/man8/ip-route.8.in index d4fae3cc783ba..c0acaa0020ef7 100644 --- a/man/man8/ip-route.8.in +++ b/man/man8/ip-route.8.in @@ -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 -- 2.10.0