From: Pablo Neira Ayuso <pablo@netfilter.org>
To: Michal Kubecek <mkubecek@suse.cz>
Cc: netfilter-devel@vger.kernel.org
Subject: Re: [PATCH conntrack-tools] conntrackd: cthelper: Add new SLP helper
Date: Mon, 22 Jul 2019 22:10:11 +0200 [thread overview]
Message-ID: <20190722201011.5bmpzw46zesm57g2@salvia> (raw)
In-Reply-To: <20190719073124.7E803E00A9@unicorn.suse.cz>
On Fri, Jul 19, 2019 at 09:31:24AM +0200, Michal Kubecek wrote:
> Service Location Protocol (SLP) uses multicast requests for DA (Directory
> agent) and SA (Service agent) discovery. Replies to these requests are
> unicast and their source address does not match destination address of the
> request so that we need a conntrack helper. A kernel helper was submitted
> back in 2013 but was rejected as userspace helper infrastructure is
> preferred. This adds an SLP helper to conntrackd.
>
> As the function of SLP helper is the same as what existing mDNS helper
> does, src/helpers/slp.c is essentially just a copy of src/helpers/mdns.c,
> except for the default timeout and example usage. As with mDNS helper,
> there is no NAT support for the time being as that would probably require
> kernel side changes and certainly further study (and could possibly work
> only for source NAT).
Applied, thanks.
prev parent reply other threads:[~2019-07-22 20:10 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-19 7:31 [PATCH conntrack-tools] conntrackd: cthelper: Add new SLP helper Michal Kubecek
2019-07-22 20:10 ` Pablo Neira Ayuso [this message]
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