[clug] Multihead DHCP/NAT

[Andrew Janke]

On Sun, Nov 23, 2008 at 8:40 PM, David <cottrill.david at gmail.com> wrote:

> The obvious solution was to jam another NIC into the laptop, but now I can't
> convince the new NIC to work with DHCP - anything here I should be looking
> for?

> I've configured /etc/default/dhcp for both cards,

dont you mean: /etc/default/dhcp3-server  (presuming you are fiddling
with debian/ubuntu type of system)

> added the subnet to
> dhcp.conf, set the new card to a static address that corresponds to the new
> subnet, restarted dhcp (and later the whole box) and I've got... nothing to
> show for it.

so /etc/dhcp3/dhcpd.conf looks something like this:?   (note the
10.10.100.? and 10.10.101.? subnets).

---
# /etc/dhcp3/dhcpd.conf

# I am the grand poo-bar (fear me)
authoritative;

# Where to put the noise
log-facility syslog;

# do nothing on this subnet
subnet x.y.z.0 netmask 255.255.255.0 { }

# local subnet
subnet 10.10.100.0 netmask 255.255.255.0 {
   default-lease-time           1200;
   max-lease-time               7200;

   option dhcp-max-message-size 2048;

   option subnet-mask           255.255.255.0;
   option routers               10.10.100.1;
   option broadcast-address     10.10.100.255;

   allow unknown-clients;
   range 10.10.100.200 10.10.100.230;
   }

# local subnet
subnet 10.10.101.0 netmask 255.255.255.0 {
   default-lease-time           1200;
   max-lease-time               7200;

   option dhcp-max-message-size 2048;

   option subnet-mask           255.255.255.0;
   option routers               10.10.101.1;
   option broadcast-address     10.10.101.255;

   allow unknown-clients;
   range 10.10.101.200 10.10.101.230;
   }


-- 
Andrew Janke
(a.janke at gmail.com || http://a.janke.googlepages.com/)
Canberra->Australia    +61 (402) 700 883