[K12OSN] eth0 and eth1

Rob Owens rowens at ptd.net
Sun Sep 7 18:55:18 UTC 2008

On Sun, Sep 07, 2008 at 10:42:33AM -0400, Stephen Crampton wrote:
> Could someone please explain how an LTSP system decides how to use eth0 and
> eth1?
> For instance, if I pull up firefox and type in cnn.com, over which interface
> does my request go out?
> Which interface is serving DHCP and TFTP requests?
> /etc/ltsp/dhcpd.conf doesn't seem to provide the answer.  The DHCP script
> under /etc/init.d refers to a variable $INTERFACES, but I cannot figure out
> where that variable is initialized.
On my Debian Etch system, /etc/default/dhcp3-server has a line:


You can change that to say INTERFACES="eth1" if you want DHCP to only serve addresses on eth1.


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