From mboxrd@z Thu Jan 1 00:00:00 1970 From: Romain Francoise Subject: [PATCH] ipv6: Silence privacy extensions initialization Date: Mon, 17 Jan 2011 18:59:18 +0100 Message-ID: <87sjwr4djd.fsf@elegiac.orebokech.com> Mime-Version: 1.0 Content-Type: text/plain Cc: Alexey Kuznetsov , "Pekka Savola \(ipv6\)" , James Morris , Hideaki YOSHIFUJI , Patrick McHardy , netdev@vger.kernel.org To: "David S. Miller" Return-path: Received: from smtp6-g21.free.fr ([212.27.42.6]:32786 "EHLO smtp6-g21.free.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751658Ab1AQR7e (ORCPT ); Mon, 17 Jan 2011 12:59:34 -0500 Sender: netdev-owner@vger.kernel.org List-ID: When a network namespace is created (via CLONE_NEWNET), the loopback interface is automatically added to the new namespace, triggering a printk in ipv6_add_dev() if CONFIG_IPV6_PRIVACY is set. This is problematic for applications which use CLONE_NEWNET as part of a sandbox, like Chromium's suid sandbox or recent versions of vsftpd. On a busy machine, it can lead to thousands of useless "lo: Disabled Privacy Extensions" messages appearing in dmesg. It's easy enough to check the status of privacy extensions via the use_tempaddr sysctl, so just removing the printk seems like the most sensible solution. Signed-off-by: Romain Francoise --- net/ipv6/addrconf.c | 3 --- 1 files changed, 0 insertions(+), 3 deletions(-) diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 5b189c9..24a1cf1 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -420,9 +420,6 @@ static struct inet6_dev * ipv6_add_dev(struct net_device *dev) dev->type == ARPHRD_TUNNEL6 || dev->type == ARPHRD_SIT || dev->type == ARPHRD_NONE) { - printk(KERN_INFO - "%s: Disabled Privacy Extensions\n", - dev->name); ndev->cnf.use_tempaddr = -1; } else { in6_dev_hold(ndev); -- 1.7.2.3