Re: nftables: bridge filter with queue to userspace

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Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx> wrote:

[ CC Bernhard ]

> On Thu, Oct 29, 2015 at 10:23:44PM +0100, Martin Gröger wrote:
> > I'm trying to build a transparent filter with application level filtering.
> > First experiment with ip and output hook and queue to userspace was
> > successful. Then I changed to bridge filtering with forward hook. With
> > counter action I see that the packets match the rule, but the queue to the
> > usersapce doesn't work.
> > 
> > Am I right, that this fuction should work?

nfqueue backend only works with NFPROTO_IPV4 and _IPV6 at the moment,
i.e. nft ip and nft ip6, or via bridge_netfilter hack (which 'pushes'
packets though ipv4/ipv6 netfilter hooks).

> Florian told me he will come up sooner or later with native queue
> support for nft (ie. no bridge_netfilter required anymore).

Argh.  I'm a moron and forgot about this.

I still have the q&d hack that makes it work but no reroute (re-bridge,
cough) support, just dump-to-userspace.

Bernhard, did you have time to work on this?

If not, I think I can make time available soon since the other work
(nft bridge conntrack, nf netns hook stuff) is delayed at the moment
anyways.
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