Hi! According /usr/src/linux/Documentation/networking/ethertap.txt I've tried to use ethertap for my experimental user space TCP/IP implementation testing. I'm using kernel 2.2.19 (UP). I load ethertap kernel module and configure it with ifconfig. Nice, ping works, ifconfig show tap0. /dev/tap0 exists, major and minor is correct. But opening /dev/tap0 does not work! munmap(0x127000, 55843) = 0 getpid() = 29070 open("/dev/tap0", O_RDWR|O_NONBLOCK) = -1 ENOSYS (Function not implemented) open("/dev/tap0", O_RDWR|O_NONBLOCK) = -1 ENOSYS (Function not implemented) open("/dev/tap0", O_RDWR|O_NONBLOCK) = -1 ENODEV (No such device) write(2, "Cannot open /dev/tap0: No such d"..., 38Cannot open /dev/tap0: No such device What can be the problem? How can I use /dev/tap0 then? I exactly followed instructions read in ethertap.txt but it does not work ;-((( - Gabor PS: please cc me, I've got problems with getting mails from this list it seems :( -- --[ Gábor Lénárt ]---[ Vivendi Telecom Hungary ]---------[ [EMAIL PROTECTED] ]-- U have 8 bit comp or chip of them and it's unused or to be sold? Call me! -------[ +36 30 2270823 ]------> LGB <-----[ Linux/UNIX/8bit 4ever ]----- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/