Pfsense version 2.4.3 release P1 has been install on ESXi6.0 for two guest and those two guests are built to be cluster. They are configured for CARP (VIP). However, servers that are on same subnet as CARP can not pingable with that CARP. The issue is same as below link. Anyone has idea about this issue.
Specifically make a port groups for interfaces with carp.
[although I thought it was Net.ReversePathFwdCheck that had to be set]