Assign subnet's per group

Randall C Grimshaw rgrimsha at
Thu Oct 22 16:18:35 UTC 2009

Here is how I do this

class "CLSR" {
  match pick-first-value (option dhcp-client-identifier, hardware);
subclass "CLSR" 1:00:01:02:03:04:05;
subclass "CLSR" 1:aa:bb:cc:dd:ee:ff;

subnet x.x.x.x netmask x.x.x.x {
   pool {
     failover peer "syredu";
     range x.x.x.x x.x.x.x;
     allow members of "CLSR";
     deny dynamic bootp clients;


From: dhcp-users-bounces at [mailto:dhcp-users-bounces at] On Behalf Of Hugo Ferreira
Sent: Thursday, October 22, 2009 11:45 AM
To: dhcp-users at
Subject: Assign subnet's per group


Wondering if i can do something like this:

Group some MAC addresses, e.g., per company department, as in man dhcpd.conf
group {
         filename "Xncd19r";
         next-server ncd-booter;

         host ncd1 { hardware ethernet 0:c0:c3:49:2b:57; }
         host ncd4 { hardware ethernet 0:c0:c3:80:fc:32; }
         host ncd8 { hardware ethernet 0:c0:c3:22:46:81; }

And then assign this group to a subnet.
Something like

subnet {
range blablabla;
allow group;
deny unknown-clients;

Can't find the right syntax for that allow group or allow from group or something like that.

1.       Is my idea possible?

2.       If so, can you help me finding the right syntax?


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