Messages in this thread | | | From | "Henning P. Schmiedehausen" <> | Subject | Sequence of IP fragment packets on the wire | Date | Thu, 3 Oct 2002 10:51:08 +0000 (UTC) |
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Hi,
as far as I can see, Linux sends out fragmented IP packets "butt-first":
11:34:53.927146 alice > bob: (frag 44605:343@1480) 11:34:53.927189 alice.4831 > bob.udpdemo: udp 1815 (frag 44605:1480@0+)
(where the first packet is actually the fragmented 2nd part of the second packet).
This confuses at least one firewall appliance. As I understand it, this is done for efficency reasons. Still, is there any way to suppress this and get the packets sent out in "head first" sequence? I know that routers might resort the fragments again but in my case I have an "alice -- firewall -- bob" topology which at the moment drops the fragment on the floor...
Is there a way to configure this? Maybe even connection specific?
I tested 2.2.19 and 2.4.18 with 100 MBit Ethernet (3Com and eepro100). Both show the same behaviour.
Regards Henning
-- Dipl.-Inf. (Univ.) Henning P. Schmiedehausen -- Geschaeftsfuehrer INTERMETA - Gesellschaft fuer Mehrwertdienste mbH hps@intermeta.de
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