Internal Layer 2 load balancing

[davestyle]

Hey guys,

I'm trying to do load balance two web servers, with the VIP and servers all on the same the subnet.

Load balancer configuration:
Virtual Server: 10.22.16.9:80
Web Server 1: 10.22.16.10:80
Web Server 2: 10.22.16.11:80

I'm only using the WAN interface on this setup. The LAN is set to a random unused address.
I've disabled packet filtering as I only want this device to act as a load balancer.

I've tried creating a Proxy-ARP address for the 10.22.16.9 and I can see the MAC address of the WAN link on an gateway router but the address does not serve any content. Tested with nmap :)
I've also tried using a CARP address for 10.22.16.9 but that seems to bring me to the web interface of PFsense  ???

Does anyone know what I'm doing wrong?