From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Kay Sievers" <kay.sievers@vrfy.org>
Date: Fri, 21 Nov 2008 19:27:34 +0000
Subject: Re: Are there events when eth carrier changes state?
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To: linux-hotplug@vger.kernel.org

On Fri, Nov 21, 2008 at 19:24, Karl O. Pinc <kop@meme.com> wrote:
> I see that eth0 has a ATTR{carrier}.
> Are there any events that could be used
> to trigger RUN rules when that changes?

No, there are no events for network interface state changes. Network
interface events have their own netlink NETLINK_ROUTE socket to listen
to events.

NetworkManager does all link handling on the desktop. Tiny custom
setups can use stuff like ifplugd to hook into these events.

Kay