linux-kernel - Re: [PATCH v4 2/2] net: br_netfiler_hooks: Drops IPv6 packets if IPv6 module is not loaded

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Message-ID: <20190831084315.GU20113@breakpoint.cc>
Date:   Sat, 31 Aug 2019 10:43:15 +0200
From:   Florian Westphal <fw@...len.de>
To:     Leonardo Bras <leonardo@...ux.ibm.com>
Cc:     Florian Westphal <fw@...len.de>, netfilter-devel@...r.kernel.org,
        coreteam@...filter.org, bridge@...ts.linux-foundation.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Pablo Neira Ayuso <pablo@...filter.org>,
        Jozsef Kadlecsik <kadlec@...filter.org>,
        Roopa Prabhu <roopa@...ulusnetworks.com>,
        Nikolay Aleksandrov <nikolay@...ulusnetworks.com>,
        "David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH v4 2/2] net: br_netfiler_hooks: Drops IPv6 packets if
 IPv6 module is not loaded

Leonardo Bras <leonardo@...ux.ibm.com> wrote:
> > There are two solutions:
> > 1. The above patch, but use NF_ACCEPT instead
> > 2. keep the DROP, but move it below the call_ip6tables test,
> >    so that users can tweak call-ip6tables to accept packets.
> 
> Q: Does 2 mean that it will only be dropped if bridge intents to use
> host's ip6tables? Else, it will be accepted by previous if?

Yes, thats the idea: Let users decide if ipv6.disable or call-ip6tables
is more important to them.