x.x.x.1     host1.de
x.x.x.1 host1.de
x.x.x.1 host1.de
x.x.x.1  host1.de host1
x.x.x.2 host2      host2.de
x.x.x.2   host2 host2.de
x.x.x.2  host2.de          host2
x.x.x.2     host2.de
x.x.x.2 host2