Can't get DHCP failover to work [pictures of setup/config]

[vbman213]

5 Interfaces, two pfSense boxes

WAN
SYNC (192.168.1.0/30)
LAN (Management) (192.168.10.0/24)
OFFICE (192.168.20.0/24)
WIFI (172.16.0.0/21)

pfSense #1

WAN: 123.123.123.226
SYNC: 192.168.1.1
LAN 192.168.10.2
OFFICE: 192.168.20.2
WIFI: 172.16.0.2

PfSense #2:

WAN: 123.123.132.227
SYNC: 192.168.1.2
LAN: 192.168.10.3
OFFICE 192.168.20.3
WIFI: 172.16.0.3

CARP IPs:

WAN: 123.123.123.225
LAN 192.168.10.1
OFFICE: 192.168.20.1
WIFI: 172.16.0.1

I have carp configured correctly. I have posted pictures of my current configuration. My problem is with DHCP Failover IP. The DHCP lease page shows communication error, state unknown, etc.

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[vbman213]

Okay, I think I figured this out based on a really old post from 2011. Apparently, when enabling DHCP Failover, you only specify the failover IP on the first interface performing DHCP, not every single interface. Is this correct?

[jimp]

@vbman213:

Okay, I think I figured this out based on a really old post from 2011. Apparently, when enabling DHCP Failover, you only specify the failover IP on the first interface performing DHCP, not every single interface. Is this correct?

You must specify a failover IP on every interface that does DHCP, on both the master and slave.