netdev - Re: [PATCH net-next v2] IPv6: add option to use Subnet-Router anycast addresses as source addresses

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Date:	Thu, 2 Jan 2014 22:19:24 -0800 (PST)
From:	François-Xavier Le Bail <fx.lebail@...oo.com>
To:	netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
	Alexey Kuznetsov <kuznet@....inr.ac.ru>,
	James Morris <jmorris@...ei.org>,
	Hideaki Yoshifuji <yoshfuji@...ux-ipv6.org>,
	Patrick McHardy <kaber@...sh.net>,
	Hannes Frederic Sowa <hannes@...essinduktion.org>
Subject: Re: [PATCH net-next v2] IPv6: add option to use Subnet-Router anycast addresses as source addresses

On Fri, 1/3/14, François-Xavier Le Bail <fx.lebail@...oo.com> wrote:

--------------------------------------------
 On Thu, 1/2/14, Hannes Frederic Sowa <hannes@...essinduktion.org> wrote:
  
>> Ah, I guess you are hinting at the situation where you
>> ping
>> a pre-defined
>> anycast address and expect back a unicast address for
>> discovering the unicast
>> address of a router e.g.? Ok, I see...
  
> Exact

more: 
Some setup may use a ping to Subnet-Router anycast address and expect a reply to discover a unicast address (not very secure, but ...).

It is the reason why, I want to keep existing default.
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