/etc/hosts
127.0.0.1 localhost 192.168.0.1 libretto.localnet libretto 192.168.0.2 192-168-0-2 192.168.0.3 192-168-0-3 192.168.0.4 192-168-0-4 192.168.0.5 192-168-0-5 192.168.0.6 192-168-0-6 192.168.0.7 192-168-0-7 192.168.0.8 192-168-0-8 192.168.0.9 192-168-0-9