netdev - Re: /proc/sys/net/ipv[46]/conf/ issue unsolved

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Message-Id: <200702132216.13828.hasso@estpak.ee>
Date:	Tue, 13 Feb 2007 22:16:13 +0200
From:	Hasso Tepper <hasso@...pak.ee>
To:	Stephen Hemminger <shemminger@...ux-foundation.org>
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: /proc/sys/net/ipv[46]/conf/ issue unsolved

Stephen Hemminger wrote:
> > You can disable it in /proc/sys/net/ipv6/conf/default/... and then
> > reenable it on the interfaces that you actually want.

And YOSHIFUJI Hideaki answered to this:

> The point is:
> 
>  - Until we have live address(es), we do not create inet6_dev{} for that
>    device.
>  - We do NOT run DAD until the link is ready (netif_carrier_ok()).
> 
> This means, we do NOT have any addresses until the link is once up,
> and thus, because the sysctl entries live in inet6_dev{}, we do not
> install net.ipv6.conf.ethX from values of net.ipv6.conf.default until
> then.

Ie. to make it very clear - I can't reenable it on the interface before
the first "carrier up" event (cable is plugged on). That's the point -
AFAICS the only way I can configure interface differently than default is
via daemon listening interface events via netlink. I can't do it in any
way before.


regards,

-- 
Hasso Tepper
Elion Enterprises Ltd. [AS3249]
IP & Data Networking Expert
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