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List:       libnet
Subject:    Re: libnet
From:       Jose Nazario <jose () monkey ! org>
Date:       2002-05-21 15:21:01
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On Tue, 21 May 2002, Mirek Dobsicek wrote:

> When I try it on loopback device, all works fine. On eth0 no :-( . The
> packet goes on wire, is catched by bootpserver, sniffer reports it has
> arrived, all checksums are fine but nothing more happens.

        ((struct ip_header *)(s_packet+ETHER_HDR_LEN))->ip_id  = 0xEEEE;
//simply EE we are

this is your issue, i think: static ip_id's. the receiving system will
mark these as seen and ignore them. randomize them, or increase them
(random intervals, monotonically, whatever).

___________________________
jose nazario, ph.d.			jose@monkey.org
					http://www.monkey.org/~jose/



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