Hi. I’m developing a multiplayer game that runs flawlessly on my home network and on broadband internet connections. But when I tried the game with my friend who has dial-up, the game was completely unplayable. I heard that DummyNet is a perfect tool for testing multiplayer games and I’m dying to use it but I can’t seem to make it work! Let me tell you about my setup: My two main computers, ComputerA and ComputerB, communicate perfectly when connected directly via a crossover cable, so there is no issue there. My DummyNet Box is just an old pc with 2 identical network cards. The cards are the: Linksys 10/100 EtherFast PCI Adapter Model #: LNE100TX My set up is as follows: ComputerA connected to DummyNet Box via cross-over cable DummyNet Box connected to ComputerB via cross-over cable My DummyNet Box boots up off the pico.000608.bin image file that I got from the official DummyNet site (http://info.iet.unipi.it/~luigi/ip_dummynet/). After logging in with… Login: root Password: setup …these are the commands that I enter and their responses (my commands begin with “#”) # sysctl -w net.link.ether.bridge=1 net.link.ether.bridge: 0 -> 1 # sysctl -w net.link.ether.bridge_ipfw=1 net.link.ether.bridge_ipfw: 0 -> 1 # ipfw add pipe 1 ip from any to any 00000 pipe 1 ip from any to any Now, from the bits and pieces I’ve picked up from the internet, ComputerA and ComputerB should now be able to communicate, but they don’t! I can’t even ping from one to the other. Am I doing something wrong! Oh and the link lights on the all 3 computers are on so I know that at least the connections are okay. Can anybody help me?

Thanks! I'm going to buy the Pro100's immediately. I'll let you know if they work out. Thanks again!

Success! I installed 2 of the following card in my DummyNet box:

Intel Pro/100 S
Order Code: PILA8460C3
http://www.intel.com/network/connectivity/products/pro100s_adapter.htm

And now my DummyNet box works flawlessly! Thanks so much John!

I can't believe how awesome DummyNet is and yet there's not much documentation about the cards that are compatible with it. Maybe this would be a good place to list DummyNet Compatible network cards?

Well thanks again! I'm off to do some testing!