Routing between same interface IP

  • Hi guys…

    I've this situation...
    Wan Interface IP -  "A"  (capable to route an assigned Public IP subnet)
    Lan Interface IP - "B" + First Public IP as VIP Alias

    Navigation of LAN subnet of "B" is ok
    Navigation of LAN subnet of "Public IPs" is ok

    This is the problem:
    IPs from Public IPs subnet not route to B subnet and B subnet IPs not route to Public IPs on same interface.
    All firewall rules is ok

    Where is the problem?