Standalone TCP/IP stack

Hi,

I'm looking for a really simple to implement standalone TCP/IP stack to communicate with a host.

I had used the Plugs library of Altera in Legacy SDK. I was happy using it. But with the newest versions an Cyclone II I can't use it anymore.

I have also tried to implement the standalone LIWP posted on nios forum. But was not successful.

I need a solution using the versions 5.0 respectively the versions 5.1 (not available yet) for implementing Cyclone II 2C20Q240.

I intend to use LAN91C111.

Thanks for your answers.