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Date: Tue, 12 Feb 2002 09:52:12 -0500
From: "David L. Parsley" <parsley@roanoke.edu>
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To: Andi Kleen <ak@suse.de>
CC: Stefan Rompf <srompf@isg.de>, linux-kernel@vger.kernel.org
Subject: Re: Interface operative status detection
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Andi,

> In short - Linux doesn't have this feature because it's not needed.
> If your routing protocol relies on link state checking without other
> probing it's broken. Zebra isn't. 

Link state checking _would_ be nice, though, for stuff like laptops 
using dhcp.  Right now, if I start my laptop without being plugged into 
the network, I have to wait for DHCP to time out before it'll finish 
booting - about 1 minute.  (yech!)

Is there a good way for a dhcp daemon to find out whether the laptop is 
connected to the network or not?  It'd be really sweet if dhcpcd could:

- down the interface and remove routes whenever the network cable was 
unplugged
- wait for the interface to get link beat again, and send a new request

This would greatly enhance desktop usability.  I'd be happy to do the 
dhcpcd hacking if the right kernel interfaces were available.

regards,
	David

-- 
David L. Parsley
Network Administrator, Roanoke College
"If I have seen further it is by standing on ye shoulders of Giants."
--Isaac Newton

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