Hi I have done a new lwip test release with the following changes: * incorporated Sergei's patch (ctrl-c support) * added an lwip_eth_simple and lwip_eth_sequential template The new test release can be downloaded from http://download.westlicht.ch/lwip-20090825.tar.gz To do synth tests do the following: create a new configuration: > ecosconfig new linux lwip_eth_simple or: > ecosconfig new linux lwip_eth_sequential enable eth0 synth device (file is attached): > ecosconfig import eth_synth.ecm build: > make > make -C build/net/lwip_tcpip/current tests run tests (a sample target.tdf is attached): ./build/install/tests/net/lwip_tcpip/current/tests/httpd_simple -t target.tdf -io -nw The current templates use DHCP to get an IP address. Just reconfigure for static IPs. To do some stress testing you can run the nc_test_slave testcase (only available in sequential mode). You will need the corresponding master test, which can be found in the ecos repository under packages/net/common/current/tests To build the nc_test_master go to the upper directory and type: > make -f make.host Also you should loosen up the very conservative default configuration of lwip pbufs to avoid dropped packets: > ecosconfig import pbufs.ecm > make && make -C build/net/lwip_tcpip/current tests Testing on real hardware would be especially useful. Also testing on big-endian targets might reveal some issues, as I've only been testing on little-endian platforms. Thanks a lot for testing! Simon