CARP Setup on ESXi - IP/Mac ISP binding max of 3 Macs

[UltraHKR]

Hello, everyone

I've been unsuccessfully trying to setup CARP between 2 pfSense VM's.

Internally the failover works OK, everything is fine and dandy.

My big problem is the WAN my ISP requires IP-to-MAC address binding, which on CARP goes floating between interfaces.
Also this ISP has a maximum of 3 MAC HW addresses, which i sadly cant comply due to the fact that just adding the ESXi vSwitch uses an additional MAC address.

I have tried doing stacked Virtual IP on CARP, but it only works on the main pfSense, when I do a forced failover the secondary traffics stops due to the IP changing MAC.

[jlw52761]

@ultrahkr the vSwitch shouldn't matter as it's not getting an IP, the ISP won't see it. What you need to do is set static MAC on the VM's, but unfortunately you cannot do that on the CARP. So, you may have to rely on DNSRR for external items coming in, if that is the concern.