[libvirt] [RFC PATCHv2 4/9] make default chain policy "DROP"

[Daniel P. Berrange]

On Wed, Oct 05, 2011 at 09:04:11AM -0700, David Stevens wrote:
> "Daniel P. Berrange" <berrange at redhat.com> wrote on 10/05/2011 08:43:45 
> AM:
>  
> > This sounds like it is introducing a backwards compatibility problem
> > wrt older libvirt deployments using NW Filters.
> 
> I don't think so. Again, only if someone has modified a standard
> filter would they have to make those same modifications to the
> new set. The default value wouldn't need to change, but they are
> all ending with "-j DROP" otherwise.

What if they have created their own custom filters and written their
filter on the assumption that the default policy was ACCEPT ? Surely
this change will break their filter ?

Daniel
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