using option 82 to assign a static ip-address

[Nico De Ranter]

Hi,



I'm trying to use DHCP option 82 to assign a different address to a host
depending on which network port it is connected to.
I'vve created the following section in my config:

############
stash-agent-options true;
...
subnet 10.103.0.0 netmask 255.255.255.0
{
        option routers 10.103.0.1;
        class "OK1Endo" {
                match if  binary-to-ascii(16, 8, ":", substring(option
agent.remote-id, 2, 7)) = "84:78:ac:84:e5:80"
                        and     binary-to-ascii (16, 8, ":", hardware) =
"1:0:14:2d:40:f:15"
                        and     binary-to-ascii (16, 8, ":",
substring(option agent.circuit-id, 5, 5)) = "e";
        }
        pool {
                filename "pxelinux.0";
                next-server 10.103.0.202;
                option mobile-ip-home-agent 10.103.0.202;
                option log-servers 10.103.0.202;
                option tz "Europe/Brussels";
                use-host-decl-names on;
                allow members of "OK1Endo";
                range 10.103.0.220 10.103.0.220;
        }
  }
###########

I'm sure the class definition is correct and the pool matches as I also
added a log statement which only seems to trigger if the client matches the
pool (if I change the class definition or remove the 'allow members' I
don't see the logs appearing in the log files anymore).

However the dhcpd server doesn't seem to send any reply to the host: in
tcpdump I see a bootp/dhcp request from the clients MAC but no replies from
the server.  If I replace the 'pool' section with a simple 'host'
definition the server responds immediately.

Any ideas what I'm doing wrong?

Note: I'm using a very old version of dhcpd (3.1.1) which unfortunately I
cannot upgrade at the moment.

Thanks in advance,

Nico

-- 
Nico De Ranter

Operations Engineer


eSATURNUS

T. +32 16 40 12 82

M. +32 497 91 53 78

www.esaturnus.com


<http://www.esaturnus.com/>


 <http://vcard.esaturnus.com/>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.isc.org/pipermail/dhcp-users/attachments/20121216/8308d501/attachment.html>