Re: static IP via DHCP and multiple NICs

On 22 Mar 2003 at 11:01, Jon Hamilton wrote:

> Dan Langille <[email protected]>, said on Sat Mar 22, 2003 [11:50:29 AM]:
> } When it comes to laptops, my house has two.  Between them, they have 
> } four NICs; two wireless, and two wired.
> } 
> } I know how to configure DHCP so that a given IP address and hostname 
> } is assigned based upon the mac address.  Here's the example:
> } 
> }        host joe {
> }           hardware ethernet 08:00:2b:4c:29:32;
> }           fixed-address joe.fugue.com;
> }        }
> } 
> } What I'd like to do is allow the above box to use any of four NICs, 
> } yet always get the same fixed address.
> } 
> } Perhaps I should just assign one wireless NIC and one wired NIC to 
> } each box and assume they are always with that box.
> 
> No need; this can be done fairly easily.  Configure each of your laptops
> to send an identifier in the DHCP request.  If you're using dhclient, you 
> can place in /etc/dhclient.conf:
> 
> send dhcp-client-identifier "laptop1";
> 
> Then on the DHCP server, you can use a declaration like:
> 
> group {
>   use-host-decl-names on;
> 
>   host laptop1.yourdomain.net {
>     option dhcp-client-identifier "laptop1";
>     option host-name "laptop1";
>     fixed-address laptop1.yourdomain.net;
>   }
> }

Is there a way to restrict MAC addresses while retaining the above 
goals?

Thank you.
-- 
Dan Langille : http://www.langille.org/


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