Alright... I have 3 network cards:

eth0 is my internet
eth1 is my house side
eth2 is my class side

DHCP works for the most part but the issue I am starting to find is that on my house side internet/ip address siezes to work. I have to manually restart the client (win2k) machine or run ipconfig /renew to fix the issue.

Side note I am using iptables/ipmasquerading for internet sharing.

here is my dhcpd.conf file:

DHCPDARGS=eth1;
DHCPDARGS=eth2;

ddns-update-style interim;

default-lease-time 1209600; # 2 weeks
max-lease-time 1814400; # 3 weeks
option domain-name-servers 206.165.6.11, 206.165.6.12;

#class side

subnet 172.16.16.0 netmask 255.255.255.0{
range 172.16.16.10 172.16.16.200;
option subnet-mask 255.255.255.0;
option broadcast-address 172.16.16.255;
option routers 172.16.16.254;
option domain-name "l1";
}

#house side

subnet 10.69.12.0 netmask 255.255.252.0{
range 10.69.13.10 10.69.13.100;
option subnet-mask 255.255.252.0;
option broadcast-address 10.69.15.255;

option domain-name "l1";

}


Again, I am only noticing this issue on my house side, not on the classroom although the classroom machines are rebooted daily.

I haven't set a gateway on my house side as I set it manually on the win2k machines as we use 2 gateways and to my understanding Linux doesn't support doing 2 gateways on one nic???

The machines will work for a couple days/couple hours whatever and then they just stop and I have to manually renew IP's or reboot....

Please someone help me!

Thanks!

estranger, I see you problem on your house side of your dhcpd.conf

I believe if you change either your house section to

#house side

subnet 10.69.13.0 netmask 255.255.252.0{
range 10.69.13.10 10.69.13.100;
option subnet-mask 255.255.252.0;
option broadcast-address 10.69.13.255;

or

#house side

subnet 10.69.12.0 netmask 255.255.252.0{
range 10.69.12.10 10.69.12.100;
option subnet-mask 255.255.252.0;
option broadcast-address 10.69.12.255;

This believe this will fix your problem.

If, indeed, that is the fix, then how would the DHCP have worked at all? How can it assign IPs to a subnet that it is not on?

whatever the case is... even when I used my old scheme or apply the scheme cojo recommends I am still posting replies from my winxp box that is a dhcp client to the linux router.....

so far no one has lost internet since I changed the ddns-update to none and I also, applied the broadcast as 10.69.13.255.

My house IP ranges are from 10.69.12.1 - 10.69.15.255 subnet 255.255.252.0.

Guage, I don't know exactly how his windoze machine get a IP from his linux machine either.

estranged, could you do a ipconfig/all on your windoze machine and see what you ip, mask, and default gateway are? I'm interest to see if you actually optained an IP from your linux box or not.....