I think George is trying to carry out selective banning -> You deny
>>specific<< MAC addresses config info, all the rest get.

You may use classes and pools to achieve this:

#Create a class that will contain the soon to be banned MAC address.
class "ban" {
  match if  substring (hardware, 1, 6);
        }

#specify a pool in which this MAC doesn't get an IP address.
pool {
    deny members of "ban";
    range 10.0.29.10 10.0.29.230;
  } 

Let us know if it pans out.

Cheers,

Benjamin

References : 1. http://www.bind9.net/dhcpd.conf
                 2. http://www.bind9.net/dhcpd.conf.5 
                 3.
http://maconlinux.net/linux-man-pages/en/dhcp-options.5.html 
                 4. http://maconlinux.net/linux-man-pages/en/dhcp-eval.5.html



    >-----Original Message-----
    >From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
    >Behalf Of Ernest Byaruhanga
    >Sent: Friday, June 17, 2005 1:22 PM
    >To: [EMAIL PROTECTED]
    >Cc: Linux Users Group Uganda
    >Subject: Re: [LUG] Refusing connections with DHCP
    >
    >Lule George William wrote the following on 06/17/2005 11:23 AM:
    >> My problem now is that I want to be ban some MAC addresses from
    >picking an IP
    >> address completely!
    >
    >look at the very first declaration in the config: all unknown clients
    >are denied lease, apart from those defined by the stated MAC addresses.
    >
    >rgds
    >ernest
    >
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