On Thu, Nov 16, 2000 at 11:11:45AM -0600, Nishant Rao wrote:
> Hi,
>
> We are conducting some research that involves setting our custom data as
> a new IP option in the IP header (in the options field) of every packet.
>
> We have poured over the source code but it is quite confusing to figure
> out how the details of the way the options field is split among various
> options (ie. offsets etc). Can anyone help us figure out how to add new
> custom options into the IP header ?
man ip(7), see the IP_OPTIONS socket option.
Linux only echoes received options, but never sets them by default unless that
socket option is specified. So it depends on the application and/or the sender.
-Andi
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