James wrote:
>
> All,
> So far all the man pages and How to's I've found (linuxdoc and
> linuxgazette) talk about using a DHCP server OR using DHCP with your
> cable/dsl modem. What for the life of me I can't find is something that
> tells me how in the blue blazes to do both. I'm on cable so that's DHCP
> and working fine. I set up /etc/dhcpd.conf as follows.
>
> #home dhcpd.conf file
> default-lease-time 7200;
> max-lease-time 82400;
> option subnet-mask 255.255.255.0;
> option broadcast-address 192.168.187.255;
> option routers 192.168.187.1;
> option domain-name-servers 166.90.172.7, 207.212.253.211;
> option domain-name "linuxpda.biz";
>
> subnet 192.168.187.0 netmask 255.255.255.0 {
> range 192.168.187.100 192.168.187.150;
> }
>
> Then when I run /etc/init.d/dchpd start (or restart) I get the error.
>
> Listening on LPF/eth1/00:50:da:75:1a:f8/192.168.187.0
> Sending on LPF/eth1/00:50:da:75:1a:f8/192.168.187.0
> No subnet declaration for eth0 (12.234.130.39).
> Please write a subnet declaration for the network segment to
> which interface eth0 is attached.
> exiting.
> [FAILED]
>
> Ok I understand that somehow I need to bind dhcp-client to eth0 (my
> external nic) and dhcpd-server to my internal nic. What I can't figure
> out how to do, is of course the binding. My external IP not only changes
> IP number but subnet as well on many the occasion. Any ideas? I'm fresh
> out. Thanks
>
> James
>
The ISC DHCPd server configuration file *requires* a subnet
declaration for all networks represented on the box even if
addresses are not leased from some of them. Create an empty
subnet declaration (no range statement) for the network to
which eth0 is attached and you'll find the server daemon
will start. This will not interfere with dhcpcd on eth0 for
your cable/dsl setup because the declaration is empty -
without the range statement there is no pool of address from
which to lease. You can also, if you're worried about it,
specify on the command line when you start DHCPd that it
watch only eth1 if you want.
dhcpd -q eth1
Regards
--
Mike Rambo
[EMAIL PROTECTED]
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