[ovs-git] Open vSwitch: debian: Do not change iptables rules by default. (master)

dev at openvswitch.org dev at openvswitch.org
Wed Jul 18 17:24:20 UTC 2012

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- Log -----------------------------------------------------------------
commit c50c79431efa7b85688fb4be61d97c5ee7a9c459
Diffs: http://openvswitch.org/cgi-bin/gitweb.cgi?p=openvswitch;a=commitdiff;h=c50c79431efa7b85688fb4be61d97c5ee7a9c459
Author: Ben Pfaff <blp at nicira.com>
debian: Do not change iptables rules by default.
Debian kernel maintainer Bastian Blank writes, at

   The netfilter rules are a shared resource. There is no synchronization,
   so the admin have the last word. As kernel maintainer, I see it similar
   to a configuration file, so §10.7 policy applies.

   The purpose of openvswitch is to provide support for switching, not to
   setup filter rules. This means it violates the principle of least

I believe that the argument by analogy to configuration files is weak,
given that the Debian policy section in question is very specifically about
files, not about general principles.  On the other hand, Debian does not
install any firewall by default, so the presence of a rule that blocks GRE
traffic is a sign that the administrator has taken an explicit action to
install a firewall that blocks GRE, and therefore it is rather rude to
override this.  Therefore, this patch simply turns off this behavior on
Debian, given that in ordinary Debian installations it will have no
adverse effect on Open vSwitch.

Debian bug #680537.
CC: 680537 at bugs.debian.org
Reported-by: Bastian Blank <waldi at debian.org>
Signed-off-by: Ben Pfaff <blp at nicira.com>
Acked-by: Simon Horman <horms at verge.net.au>


Summary of changes:
 debian/openvswitch-switch.init |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)

Open vSwitch

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