From patchwork Wed Nov 30 08:29:48 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Phil Sutter X-Patchwork-Id: 700896 X-Patchwork-Delegate: shemminger@vyatta.com Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3tTDBJ3tZGz9vF7 for ; Wed, 30 Nov 2016 19:30:16 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753696AbcK3IaE (ORCPT ); Wed, 30 Nov 2016 03:30:04 -0500 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 Received: from mail.nwl.cc (orbyte.nwl.cc [127.0.0.1]) by mail.nwl.cc (Postfix) with ESMTP id 2C01361BFF; Wed, 30 Nov 2016 09:29:58 +0100 (CET) Received: from xsao (localhost [IPv6:::1]) by mail.nwl.cc (Postfix) with ESMTP id 098D361BFB; Wed, 30 Nov 2016 09:29:58 +0100 (CET) From: Phil Sutter To: Stephen Hemminger Cc: netdev@vger.kernel.org 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> X-Mailer: git-send-email 2.10.0 X-Virus-Scanned: ClamAV using ClamSMTP Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org 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