DHCP Server crazy messages, please help!

I have four DHCP servers on this CCR1072, but one of them is throwing some whack messages like every minute.

It’s like it’s trying to offer a lease for an IP address to every single MAC address.
In this case it’s offering to MAC ending in :26 which on the ARP table for some oddball reason has four IP addresses in the pool already assigned that MAC (as shown).

What the hell is going on here?

Anyone seen this, and can help point me in the right direction?

The other three DHCP servers on three other interfaces all act normal, just this one is really F’ed up.

I’ve tried power cycling the CCR already.
DHCP.jpg