Masquerade to other IP

Hello all,

I have a WAN interface configured with a PPPoE, it take a public IP address and I can navigate this way. It works great.

The problem is that the PPPoE IP is dynamic, I have a /30 static public address that I can use with this connection, I want to navigate with this new IPs.

How could I configure this?

I create a new interface:

/interface bridge add name=loopback0

Then I configure a IP address to this interface in “IP → Addresses”

And change the masquerade rule (IP → Firewall → NAT) to “Out. Interface=loopback0”.

But I can navigate this way. Am I missing something?

Thanks for your help.

Regards.