netdev - Re: [RFC PATCH v2 net-next] net: ipv6: Add a sysctl to make optimistic addresses useful candidates

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <1413980022.2337.60.camel@localhost>
Date:	Wed, 22 Oct 2014 14:13:42 +0200
From:	Hannes Frederic Sowa <hannes@...essinduktion.org>
To:	Lorenzo Colitti <lorenzo@...gle.com>
Cc:	Erik Kline <ek@...gle.com>, netdev <netdev@...r.kernel.org>,
	Ben Hutchings <ben@...adent.org.uk>
Subject: Re: [RFC PATCH v2 net-next] net: ipv6: Add a sysctl to make
 optimistic addresses useful candidates

On Mi, 2014-10-22 at 20:50 +0900, Lorenzo Colitti wrote:
> On Wed, Oct 22, 2014 at 8:36 PM, Hannes Frederic Sowa
> <hannes@...essinduktion.org> wrote:
> > In the near future we also must introduce specific DAD events needed for
> > RFC7217 addresses (to count DAD progress and safe the information per
> > prefix in user space). I would prefer to keep the logic for RTM_NEWADDR
> > that the kernel will definitely allow the use of the address but
> > RTM_NEWADDR should be handled idempotent by user space.
> 
> Duplicate RTM_NEWADDR notifications aren't a problem though, right?
> The current code send RTM_NEWADDR every time an RA increases the
> lifetime of an address, so I think it's reasonable to assume that apps
> have to be able to deal with it, because it's pretty frequent.

I don't think it is a serious problem (or a problem at all). I would
just try to reduce the number of notifications, that's all.

Bye,
Hannes


--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html