Re: [SLUG] DHCP help! (IP interfaces)

[Danny Yee <danny@nospam.anatomy.usyd.edu.au>]

DaZZa wrote:
> I've had a bit more of a think about it, and I'm not sure I understand
> quite how your network is running.
> 
> Do you have three IP address ranges bound to the one physical segment? Or
> are you forwarding requests from other segments to one DHCP server via a
> router or some such?
> 
> If the former - why? It's a very strange setup.
 
Yep, I've got two subnets bound to one physical segment.  The reason for
this is that one of the subnets is a 172.16 internal network, the other
is the 129.78 public network.  Some of the machines are on the internal
network for security.

The machine has two IP addresses on the 129.78 network because one of
them is the nameserver, which I want to be able to move to another machine
(if necessary) without interrupting anything else...

> If the latter, then you should be able to forget the virtual interfaces on
> the ethernet card, and simply tell the DHCP server to respond on the main
> eth0 interface _to requests from the other subnet_.

Anyway, I got it answering requests on all aliases by putting the subnet
sections in dhcpd.conf inside "shared-network anatomy { ... }".

Danny.

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