Hi Tony,
I suspect the invalid condition can arise from configuring a NIC with a fixed IP, setting up the DHCP server on the NIC then changing the LAN IP/subnet. I'd need to test this scenario. iirc, on routers I've used, in this scenario they have automatically moved the DHCP settings to the IP/new subnet.

Rob, do you know if these two errant NIC's, eth0 and eth1, had previously been configured to use the 192.168.130.0/24 subnet?