Routing and pass valid(public) ips to another mikrotik

I have a 450G routerboard with a private ip on ether1 (10.123.123.2/30) which is connected by vlan to a server (Mikrotik) and which has the ip: 10.123.123.1/30.
And I have a route (ip> route) for 10.123.123.1.
From that Routerboard I can ping normally at 10.123.123.1.
In bridge, I have a loopback interface( /interface bridge
add name=conn-link
add name=loopbackp-ips)

In ip Address I have the following:
10.123.123.2/30 at ether1
xxx.122.44.123 → loopbackp-ips
xxx.122.44.124 → loopbackp-ips
xxx.122.44.125 → loopbackp-ips
All public ips.
So I have in Interface3 (ether3) the ip 10.233.233.1/30 that communicates with 10.233.233.2/30 that is in a 4011.
Ip> firewall I have Nat:
action = src-nat chain = srcnat out-interface = ether1 to-addresses =
xxx.122.44.123
Now, i ping, and open pages ok. The Routerboard 4011 have Internet Connection.
4011 focuses and serves customers. But I can’t pass a public ip to her.
How could I do that?
Eg : xxx.122.44.124 up in 4011? if possible?

Remove address from loopbackp-ips and route it to RB4011?

Dont work :frowning:

It should. You of course need to configure that address on RB4011, then make sure that no firewalls block it, etc.