Asus AC66U NAT Configuration Help

[motherf]

Hi all,

Scenario:

Router: Asus AC66u with last Merlin's firmware.
ISP: 1 direct connected ip + 64 ip subnet (for example 5.5.5.5 and the 64 ip subnet:
82.77.222.128/26)
Lan: 10.10.10.1-10.10.10.255

How can I make the lan ip 10.10.10.55 to be translated(nat) for example as 82.77.222.129?
I mention that I don't want to disable the nat and and configure my lan with 82.77.222.128/26, all I want is to know how can a specific intra LAN ip to be custom translated?

Thank you in advance guys

 

[System Error Message]

static routes + NAT. On a non consumer router you would enter the rules like this
chain src-NAT src address LAN 1, destination address !LAN 1, action masquerade
chain src-NAT src address LAN 2, destination adddress !LAN 2, action masquerade
...

than in the routes
LAN 1, gateway Router IP 1 metric 0
LAN 2, ...
0.0.0.0/0 gateway Router public IP metric 1

 

[motherf]

static routes + NAT. On a non consumer router you would enter the rules like this
chain src-NAT src address LAN 1, destination address !LAN 1, action masquerade
chain src-NAT src address LAN 2, destination adddress !LAN 2, action masquerade
...

than in the routes
LAN 1, gateway Router IP 1 metric 0
LAN 2, ...
0.0.0.0/0 gateway Router public IP metric 1

Thanks for the fast reply man
I understand, but on this particularly device how can it be done exactly?

 

[motherf]

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