netdev - Re: inbound connection problems when "netlink: test for all flags of the NLM_F

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Message-ID: <20110118181158.GA4202@del.dom.local>
Date:	Tue, 18 Jan 2011 19:11:58 +0100
From:	Jarek Poplawski <jarkao2@...il.com>
To:	jamal <hadi@...erus.ca>
Cc:	David Miller <davem@...emloft.net>, pablo@...filter.org,
	arthur.marsh@...ernode.on.net, jengelh@...ozas.de,
	eric.dumazet@...il.com, netdev@...r.kernel.org
Subject: Re: inbound connection problems when "netlink: test for all flags
 of the NLM_F_DUMP composite" commit applied

On Tue, Jan 18, 2011 at 09:05:03AM -0500, jamal wrote:
> On Tue, 2011-01-18 at 10:24 +0000, Jarek Poplawski wrote:
> 
> > Do you all expect all users manage to upgrade avahi app before
> > changing their stable kernel? I mean "own distro" users especially.
> 
> Unfortunately if that app is widely deployed, it is not pragmatic
> to break it in the name of pedanticity. i.e.
> Be conservative in what you send (clearly Avahi is farting all over the
> place) but more importantly be a nice liberal in what you accept.
> Maybe tell them if you have the cycles about their bad behavior.
> The important part is the GET (kind = 2). The DUMP as Jarek says
> is merely a utility to extrapolate that we need you to
> get everything.. So it is not such a big deal if someone passes
> extraneous senseless flags. Wrong? yes.

Thanks for the confirmation of my suspicions wrt. the RFC & rtnetlink.
But then Avahi seems right and we should get back to the written law.

> Jarek - For the record although i coauthored the doc, I was merely
> a messenger in putting together some artist painting.

Well, ain't pictures better than words ;-)

Cheers,
Jarek P.
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