If required, the trailer should be added by your ethernet driver.

On Mar 25, 2005, at 12:00 PM, <andersen7 (at) charter (dot) net [email concealed]> wrote:

>
>
>
> 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 ?
>
>
--
Mike Schiffman, CISSP
http://www.packetfactory.net/schiffman
Doveryay No Proveryay

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