@FisherKing:
I don't know if this should be posted here or under the DHCP/DNS forum, but it takes place under 1.2.3, so I'm posting here.
I don't think you are seeing anything specific to 1.2.3 here, so yeah it should be in DHCP/DNS. If you have a config that works in 1.2.2, but not under 1.2.3, that's another matter.
@FisherKing:
I've setup DHCP on the LAN and tried a couple of different configurations to get the failover to work using just the GUI. I've set the same IP range on both boxes, and I've configured the DNS and Gateway fields with the same IP addresses on both boxes. I've tried assigning different blocks of IPs to each box - but from what I've read on the ISC site, this approach isn't correct. I've tried leaving DNS and gateway settings empty. I have entered the secondary's real LAN address in the failover peer IP box, and I've entered the secondary's CARP address in the failover peer box.
Here's an example. Assume we have two boxes fw1 and fw2. Lan addresses are 192.168.1.2 and 192.168.1.3 respectively. There is a CARP VIP 192.168.1.1
services, dhcp, LAN fw1:
range 192.168.1.100 192.168.1.150
DNS servers 192.168.1.1
Gateway 192.168.1.1
Failover Peer 192.168.1.3
services, dhcp, LAN fw2:
range 192.168.1.100 192.168.1.150
DNS servers 192.168.1.1
Gateway 192.168.1.1
Failover Peer 192.168.1.2
Try stopping and starting DHCP on both boxes and see if it goes to normal on the status screen. You should be able to do this without resorting to crazy hacks.