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[lwip-users] IP packet dropped due to bad version number 15


From: Iwan Budi Kusnanto
Subject: [lwip-users] IP packet dropped due to bad version number 15
Date: Thu, 22 Oct 2009 14:35:29 +0700

Hi, i try to port lwip. I run the OS in qemu, and set lwip IP to 192.168.0.1
When i ping 192.168.0.1, i continuously get the following error, below.
Note : the qemu & tap0 setting was fine. Previous lwip port can be
ping-ed with this setting.
I also copy-paste my 'tcpdump -i tap0'.
Any idea ?

** error from lwip **
IP packet dropped due to bad version number 15
IP header:
+-------------------------------+
|15 |15 |  0xff |     65535     | (v, hl, tos, len)
+-------------------------------+
|    65535      |000|      23   | (id, flags, offset)
+-------------------------------+
|  242  |  244  |    0xad11     | (ttl, proto, chksum)
+-------------------------------+
|    8  |    6  |    0  |    1  | (src)
+-------------------------------+
|    8  |    0  |    6  |    4  | (dest)
+-------------------------------+


** tcpdump -i tap0 **
14:30:31.925668 arp who-has 192.168.0.1 tell paijo.local
14:30:32.925668 arp who-has 192.168.0.1 tell paijo.local
14:30:34.929668 arp who-has 192.168.0.1 tell paijo.local
14:30:35.929668 arp who-has 192.168.0.1 tell paijo.local
14:30:36.929668 arp who-has 192.168.0.1 tell paijo.local
14:30:38.933669 arp who-has 192.168.0.1 tell paijo.local
14:30:39.933668 arp who-has 192.168.0.1 tell paijo.local
14:30:40.933669 arp who-has 192.168.0.1 tell paijo.local
14:30:42.937669 arp who-has 192.168.0.1 tell paijo.local
14:30:43.937668 arp who-has 192.168.0.1 tell paijo.local
14:30:44.937669 arp who-has 192.168.0.1 tell paijo.local
14:30:46.941670 arp who-has 192.168.0.1 tell paijo.local
14:30:47.941668 arp who-has 192.168.0.1 tell paijo.local
14:30:48.941669 arp who-has 192.168.0.1 tell paijo.local
14:30:50.945669 arp who-has 192.168.0.1 tell paijo.local
14:30:51.945667 arp who-has 192.168.0.1 tell paijo.local
14:30:52.945668 arp who-has 192.168.0.1 tell paijo.local
14:30:54.949668 arp who-has 192.168.0.1 tell paijo.local
14:30:55.949669 arp who-has 192.168.0.1 tell paijo.local
14:30:56.949669 arp who-has 192.168.0.1 tell paijo.local
14:30:58.953671 arp who-has 192.168.0.1 tell paijo.local
14:30:59.953668 arp who-has 192.168.0.1 tell paijo.local
14:31:00.953674 arp who-has 192.168.0.1 tell paijo.local
14:31:02.957668 arp who-has 192.168.0.1 tell paijo.local
14:31:03.957668 arp who-has 192.168.0.1 tell paijo.local
14:31:04.957668 arp who-has 192.168.0.1 tell paijo.local
14:31:06.961668 arp who-has 192.168.0.1 tell paijo.local
14:31:07.961669 arp who-has 192.168.0.1 tell paijo.local
14:31:08.961668 arp who-has 192.168.0.1 tell paijo.local
14:31:10.965668 arp who-has 192.168.0.1 tell paijo.local
14:31:11.965670 arp who-has 192.168.0.1 tell paijo.local
14:31:12.965668 arp who-has 192.168.0.1 tell paijo.local


-- 
Iwan Budi Kusnanto




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