I managed to get the simpleserver demo running again this time after manual start up of rtnet. The only thing I was originally missing was rtudp.ko.
Unfortunately if I send a UDP message to the Linux box from an external PC running a UDP test program I still loose the first 8 bytes of the message and the message echoed back contains an additional 8 bytes at the start. These 8-bytes change each time, perhaps a time stamp? This is what I do to set up RTnet in case there is anything obviously stupid: sudo ifconfig eth0 down sudo ifconfig eth1 down sudo rmmod tg3 sudo rmmod e1000e cd /usr/realtime/modules sudo insmod rtai_rtdm.ko cd /usr/local/rtnet/modules sudo insmod rtnet.ko sudo insmod rtipv4.ko sudo insmod rtudp.ko sudo insmod rtpacket.ko sudo insmod rt_loopback.ko sudo insmod rt_e1000.ko cards=1,0 cd .. cd sbin sudo ./rtifconfig rteth0 up 192.168.20.13 netmask 255.255.255.0 sudo ./rtifconfig rtlo up 120.0.0.1 cd /lib/modules/2.6.32-122-rtai/kernel/drivers/net sudo insmod tg3.ko I doubt it is a bug, I wonder if I am either still not using it correctly or if I need to modify the source? Graham
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