Re: DHCP and secondaries

Christopher Davis <chr+@andrew.cmu.edu> Thu, 16 May 1996 17:44 UTC

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From: Christopher Davis <chr+@andrew.cmu.edu>
To: Multiple recipients of list <dhcp-v4@bucknell.edu>
Subject: Re: DHCP and secondaries
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Excerpts from netdev.dhcp-v4: 16-May-96 Re: DHCP and secondaries by Sam
Wilson@tattoo.ed.ac. 
> A related question: Does anyone know of a BOOTP or DHCP server that can
> hand out a different IP configuration to the same MAC address depending
> on the value of the gateway address field?  The application is that we
> are considering providing a limited service for people with portables. 
> Depending where they physically connect they obviously need a different
> config and in some ways it would be nice to have single boot server
> rather than one for each possible location. 

I'm not sure I understand your meaning. Are you talking about a
conditional for a particular MAC address. e.g.
If 001122334455 appears behind 128.2.5.254, give him config X.
But if 001122334455 appears behind any other router, give him config Y?

I haven't heard of any package doing this or planning to do this.

dhcp-3.3.x bases the configuration that it's going to give to a client
using the ip address. Meaning
Whoever uses 128.2.5.1 will get X config + $DHCP no matter who they are.

Where X config comes from the ip address (Gateway, mask, ...), and $DHCP
is a global configuration (DNS servers, WINS servers..).




Chris Davis
Network Development
Carnegie Mellon University