ethertap

From: Gábor Lénár (lgb@lgb.hu)
Date: Tue Jun 05 2001 - 13:32:50 EST

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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 ]---------[ lgb@lgb.hu ]--
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 -------[ +36 30 2270823 ]------> LGB <-----[ Linux/UNIX/8bit 4ever ]-----
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