How to raise two network devices on one virtual machine?

Question

Computer networks

I don't know how to put it right. Is it possible to connect to a virtual server using an external IP and a local one? For example, I configured br0 bridge and external IP like this:

auto  ens3
iface ens3 inet static

        address 190.155.44.10
        netmask 255.255.255.255
        broadcast 190.155.44.10

        post-up route add 111.222.444.1 dev ens3
        post-up route add default gw 111.222.444.1
        post-down route del 111.222.444.1 dev ens3
        post-down route del default gw 111.222.444.1

On the host

auto enp1s0f0
iface enp1s0f0 inet manual

auto br0
iface br0 inet dhcp
        bridge_ports enp1s0f0
        bridge_stp off
        bridge_fd 0
        bridge_maxwait 0

But you can additionally configure default NAT with an address like 192.168.122.5 - how to do it? What to write on the host and on the guest?