IP header check failed: bad IP version

[Shweta Bhandare]

Eddie,

Here is a dump :
Before_Strip:  182 | 00001000 00000000 00000000 00000020 01000500 0000c310
IP header check failed: bad IP version
tun-bad:  168 | 00200100 05000000 c3100000 41000000 09000300 74617030 
00646576 0
a000100 fefd0000 0000746d
Before_Strip:   50 | 00001800 00000000 00000000 00000220 0000ff02 fd030000
tun-bad:   36 | 02200000 ff02fd03 00000000 08000100 01ffffff 08000700 
01000001 0
8000400 05000000

What is strange is that the first packet is 182 bytes long and the 
second onwards is 50 bytes long.

When run on the laptop, it prints tun-ok and is 28 bytes long.

Thanks,
	Shweta.

Eddie Kohler wrote:
> Shweta,
> 
> 
>>	I'm running the test-tap.click file and get an error message
>>IP header check failed: bad IP version
>>tun-bad:  168 | 00200100 05000000 c3100000 41000000 09000300 74617030
>>tun-bad:   36 | 02200000 ff02fd03 00000000 08000100 01ffffff 08000700
> 
> 
> I don't know if anyone has run test-tap on an iPAQ. The weird thing is that
> I can't see an IP header anywhere in those two lines. I would change the
> Print(tun-bad) command to print out more of the packet. (man Print to see
> how.) That and add a Print() statement before the Strip(14). Maybe the iPAQ
> does not strip the Ethernet header before passing the packet to userlevel.
> 
> Eddie