Re: nat issue

[Oleg <lego12239@yandex.ru>]

On Sat, Feb 05, 2011 at 12:57:16PM +0100, Pascal Hambourg wrote:
> Oleg a ?crit :
> > On Fri, Feb 04, 2011 at 03:54:20PM +0100, Pascal Hambourg wrote:
> >> 
> >>>   Any ideas?
> >> Yes, one : just another case of undesirable interaction between bridge
> >> and netfilter (aka bridge-netfilter).
> [...]
> >> Setting sysctl net.bridge.bridge-nf-call-iptables=0 to disable passing
> >> bridged packets to netfilter shouldf fix the problem.
> > 
> >   Thanks a lot! Good explanation. I completely forgot about bridge-nf-* vars.
> 
> Another option may be to use a virtual network between virtual machines
> instead of a bridge, so the host does not see the traffic between them.
> I don't know whether KVM provides such option, otherwise VDE (vde2)
> could be used instead.

  kvm support vde. I've tested it. It works well. But what about perfomance 
and stability? Which of two (vde vs bridge&tap) is better?

> 
> Yet another option may be to use a separate network namespace (netns),
> thus separate conntracks, for the bridge and its virtual interfaces.
> Don't ask me how to use this.

  Hm. May be i will try it later.