netdev - Re: [PATCH net-next v4] net: ipv6: Make address flushing on ifdown optional

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Date:	Wed, 7 Oct 2015 11:43:06 -0400
From:	Sowmini Varadhan <sowmini05@...il.com>
To:	David Ahern <dsa@...ulusnetworks.com>
Cc:	netdev <netdev@...r.kernel.org>, hannes@...hat.com,
	Nicolas Dichtel <nicolas.dichtel@...nd.com>
Subject: Re: [PATCH net-next v4] net: ipv6: Make address flushing on ifdown optional

On Wed, Oct 7, 2015 at 11:17 AM, David Ahern <dsa@...ulusnetworks.com> wrote:
> Currently, all ipv6 addresses are flushed when the interface is configured
> down, including global, static addresses:
  :
>
> Add a new sysctl to make this behavior optional. The new setting defaults to
> flush all addresses to maintain backwards compatibility. When the setting is
> reset global addresses with no expire times are not flushed:

does src addr selection also need to be modified to know if/when it can/cannot
use this static address as a source addr? Or does the TENTATIVE flag
make it Do The Right Thing per rfc 3484?

--Sowmini
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