Two IP addresses one network interface and virtualization

I have a Debian [H] host server with one network interface, configured like this (/etc/network/interfaces):

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
    address xxx.yyy.zzz.77
    netmask 255.255.255.224
    broadcast xxx.yyy.zzz.95
    gateway xxx.yyy.zzz.65
    post-up iptables-restore < /etc/iptables.up.rules

I've just installed qemu with Debian client [C] installation and I want to assign second IP address to this virtual machine. I've requested also additional MAC address from provider because I want this virtual machine to be visible from outside indepdendently.

How can I do that?

[H] - IP xxx.yyy.zzz.77 (as is)
[C] (installed on [H] using qemu) - IP xxx.yyy.zzz.66 (additional)

Switch to using a bridge device and make sure the qemu instance is connected to that. You can find a guide to doing that on the Debian wiki: https://wiki.debian.org/BridgeNetworkConnections

The bridge device will act like a virtual bridge and it would thus seem to your VM that it's connecting to the actual network.

Two IP addresses one network interface and virtualization

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