Nat 1:1 not able with DHCP addresses on LAN?

[Assassin]

Hello everyone,

I need to know if it's not possible by default to enable 1:1 NAT with DHCP addresses.

I created a bunch of additional virtual IPs on the WAN side, and created rules for them to be used
for some DHCP addresses from the LAN side but it doesn't work.

When using static IPs on LAN, 1:1 works flawlessly.

And could s.b. please tell me, if "Virtual IP" or "Proxy ARP" is better for this purpose?

Thanks in advance,

Gunnar