IP_HDRINCL and IP_PKTINFO on RAW sockets with sendmsg

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Hello,

I am using IP_HDRINCL and IP_PKTINFO (to choose by which interface the
packet leaves) on a RAW socket.

I'm using the udphdr structure with IPPROTO_RAW but I keep Malformed
Packet in the Ethereal traces and the IP header can't even be read by
Ethereal.

Is there something wrong with my approach? Please advise. Thank you.

Regards,
Se-Hsieng

Attached: test_iphdr.c

• text/x-c attachment: test_rawhdr.c__charset_UTF-8

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