Hi!
Was anyone able to set up isc dhcp server to function on multiple interfaces. What I'm trying to do is use dhcpd on cable eth and wireless eth, but can't make dhcp server to give ips from different class to coressponding interface ie
eth1 192.168.1.140-192.168.1.160
eth2 192.168.3.140-192.168.3.160
unless I deny unknown clients in one subnet, and make reservation for each client, my dhcpd server would always use up first poll and then move to the next one regardless of interfaces..


here is my dhcpd.conf

ddns-update-style none;
shared-network MYNET{
option domain-name "ns.mynet.net";
option domain-name-servers dns1, dns2;
authoritative;
subnet 192.168.3.0 netmask 255.255.255.0 {
option routers 192.168.3.1;
range 192.168.3.140 192.168.3.160;
default-lease-time 28800;
one-lease-per-client on;
deny unknown-clients;
}
subnet 192.168.1.0 netmask 255.255.255.0 {
option routers 192.168.1.1;
range 192.168.1.140 192.168.1.180;
default-lease-time 28800;
# one-lease-per-client on;
# always-broadcast on;
}
}

Any feedback is very welcome

dhcpd takes a device as an argument, and a different conf file as another argument, although its best just to built it so that its one file, 2 entries, and dhcpd is smart enough to realize that if eth0 is on 192.168.2.x and eth1 is on 192.168.0.x it'll match the right subnet declaration with the right card.

I've only had to do 2 once... and I helped a guy with a 5 entry one once... there's something blindingly obvious to me that isn't occuring to me right now... By default it only directs at eth0, so I think the trick was simply:

dhcpd eth0 eth1

Probably,

Cheers,

Finegan

I have eth0 192.168.0.1 and eth2 192.168.98.1 and here is my simplified dhcpd.conf:

# dhcpd.conf
#
# Configuration file for ISC dhcpd (see 'man dhcpd.conf')
#
default-lease-time 2400;
max-lease-time 7200;
option domain-name "mydomain.com";
ddns-update-style none;

subnet 192.168.0.0 netmask 255.255.255.0 {
option subnet-mask 255.255.255.0;
option broadcast-address 192.168.0.255;
option routers 192.168.0.1;
range 192.168.0.51 192.168.0.249;
}

subnet 192.168.98.0 netmask 255.255.255.0 {
option subnet-mask 255.255.255.0;
option broadcast-address 192.168.98.255;
option routers 192.168.98.1;
range 192.168.98.51 192.168.98.249;
}

and DHCP starts in my startup script (rc.inet2 in slackware):