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Ethernet Trailers

from [andersen7] Network Security [Permanent Link]
Subject: Ethernet Trailers
Date: 25 Mar 2005 20:00:52 -0000 



When I build an igmp message with 

libnet_build_igmp
libnet_build_ipv4
libnet_build_ethernet

The packet is really smaller than the minimum ethernet frame (46 data bytes). 
If I try to add the trailer at the ethernet layer (so it is 64 bytes) it wipes 
out the packet, is it possible to have an offset in build_ethernet so the 
trailer is added after the IP datagram ?
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