Sunthiti Patchararungruang writes:
> I have to create a route program for my thesis. Its operation is different
> from normal packet forwarding. Therefore, I need to forward all packets
> instead of using normal packet forwarding in FreeBSD kernel. I capture
> packets via Divert socket. It works well. I can grap IP packket including
> its header. However, I use normal Raw IP socket to write the packets to
> selected next-hop. I use socket option SO_DONTROUTE and IP_HDRINCL with my
> Raw IP socket and use "sendto" to write packets with "sockaddr" set to the
> IP of the next-hop-gateway. The sendto command always return error with
> errno=22. How can I solve this error?
22 = EINVAL. That can happen if your IP header is not well-formed.
The relevant file is /usr/src/sys/netinet/raw_ip.c.
-Archie
___________________________________________________________________________
Archie Cobbs * Whistle Communications, Inc. * http://www.whistle.com
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