Re[2]: kern/125003: incorrect EtherIP header format.

The following reply was made to PR kern/125003; it has been noted by GNATS.

From: Shunsuke SHINOMIYA <shino@xxxxxxxxxxx>
To: Andrew Thompson <thompsa@xxxxxxxxxxx>,
Hiroki Sato <hrs@xxxxxxxxxxx>
Cc: freebsd-bugs@xxxxxxxxxxx,
bug-followup@xxxxxxxxxxx
Subject: Re[2]: kern/125003: incorrect EtherIP header format.
Date: Sun, 29 Jun 2008 16:27:33 +0900

Hi,

It is unclear where the interoperability problem comes in.

I'm sorry. A fix I submitted was a mistake.


Which would conform to the requirement. Can you describe the problem you
are seeing.

FreeBSD's current implementation expects 0x03, 0x00 as EtherIP header,
but another implementation(UNIVERGE IX2015, products by NEC, Japan)
transmits 0x30, 0x00. Then FreeBSD box discards EtherIP packets.

I read RFC3378 and thought 0x30, 0x00 is correct.


The result of 'tcpdump -np -x proto etherip' at FreeBSD box is as
follows.

192.168.2.37: FreeBSD box
192.168.2.128: IX2015
MAC addresses were replaced with ****.

16:02:40.952832 IP 192.168.2.128 > 192.168.2.37: etherip 344
0x0000: 4500 016c 0098 0000 4061 f2a3 c0a8 0280
0x0010: c0a8 0225 3000 **** **** **** **** ****
~~~~ EtherIP header by IX2015
snip

16:02:48.080826 IP 192.168.2.37 > 192.168.2.128: etherip 108
0x0000: 4500 0080 01f3 0000 1e61 1435 c0a8 0225
0x0010: c0a8 0280 0300 **** **** **** **** ****
~~~~ EtherIP header by FreeBSD
snip

--
Shunsuke SHINOMIYA <shino@xxxxxxxxxxx>

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