*cut* Once I set up a Serve rat a very moronic and clueless Hoster (Strato) wich used/uses the same Setup. Depends on their Network you may wanna try 255.255.0.0 or 255.255.255.0. :)
fxp0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500 lladdr 00:00:aa:77:cc:22 groups: egress media: Ethernet autoselect (100baseTX full-duplex) status: active inet 81.169.x.x netmask 0xffff0000 broadcast 81.169.255.255 As you can see it works. So it should work on 1&1 and other Hosters too. Btw: Do not use STRATO. Their Support is somewhat poor, their tecnicans are clueless and they block you if their "Fail-Over"-Fails and blame you for getting a DDoS and tell you to stop it (crazy or.. I eman IF you get DDoSed how should YOU be able to stop it?). Just mo****fu***** idiots.. realy. I hope you`ll be happy at 1&1. :) Kind regards, Sebastian