HAProxy for HTTP + CARP + MultiWAN with VIPs issue (Outbound NAT?)

[b0rman]

Hi!

I have two pfSense firewalls with CARP setup, 2 WANs and HAProxy that points to HTTP servers in my LAN.

Scheme:
pfSense server #1
ISP#1 - Public IP1.1 - pfSense#1 with HAProxy - HTTP
ISP#2 - Public IP1.2 - ISP#2 Local IP1 - pfSense#1 with HAProxy - HTTP
LAN vIP - pfSense as Gateway (Master)

pfSense server #2
ISP#1 - Public IP2.1 - pfSense#2 with HAProxy - HTTP
ISP#2 - Public IP2.2 - ISP#2 Local IP2 - pfSense#2 with HAProxy - HTTP

All LAN servers and PCs GW set as LAN vIP that migrates via CARP.

Problem:
When I'm trying to access HTTP servers via IPs:
Public IP1.1 -> OK
Public IP1.2 -> OK
Public IP2.1 -> OK
ISP#2 Local IP1 -> OK
ISP#2 Local IP2 -> OK
Public IP2.2 -> FAILED

How can I get Public IP2.2 accessible?

I think it's some king of outbound NAT issue, but I can't figure it out how to set it up. Need help :)

[dotdash]

Please don't double post.