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Date: Mon, 31 Mar 2003 08:59:09 -0800
From: "Randy.Dunlap" <rddunlap@osdl.org>
To: roy@karlsbakk.net
Cc: linux-kernel@vger.kernel.org
Subject: Re: turning off kernel dhcp klient on _one_ nic?
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	<20030328081318.304196ca.rddunlap@osdl.org>
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On Fri, 28 Mar 2003 08:13:18 -0800 Randy.Dunlap <rddunlap@osdl.org> wrote:

| On Fri, 28 Mar 2003 10:30:35 +0100 Roy Sigurd Karlsbakk <roy@karlsbakk.net> wrote:
| 
| | is it possible to turn off the kernel dhcp client / kernel autoconfiguration 
| | on _one_ nic? We're using dual gigabit cards from intel (e1000), so splitting 
| | up modular/static drivers obviously won't do the job. I've search through the 
| | kernel doc, but I can't find anything...
| 
| I've seen that, er, scenario, too.
| I should have fixed it last night, but I had other things to do.
| 
| Can['t] you just mess around with (depending on distro, not kernel)
| something like /etc/sysconfig/network-scripts/ifcfg-ethN (just rename
| one of them so that it won't be used)?
| 
| This should totally disable half of the dual NIC.  Do you want to only
| disable dhcp on half of it, but keep it usable otherwise?
| You can edit ./ifcfg-ethN and change the line
| BOOTPROTO=dhcp
| to
| BOOTPROTO=
| 
| Something like that should work, but I haven't done it yet.

I did this and it works.  I had /etc/sysconfig/network-scripts/ifcfg-eth[01]
but I only want one of them alive, so I renamed ifcfg-eth1 to
not-ifcfg-ethbackup  (since the ifcfg* files are searched for as /ifcfg*/).
Then I renamed ifcfg-eth0 to ifcfg-ethmain and (by using advice from
the thread on "NICs trading places ?"), I used 'nameif' to name the
eth0 interface to 'ethmain' by making an /etc/mactab file containing:

ethmain     mac.address.for.live.interface

and I modified /etc/rc.d/init.d/network to run 'nameif' to change
the interface names as listed in the /etc/mactab file.

--
~Randy
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