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Date:      Mon, 12 Nov 2001 12:38:19 -0800 (PST)
From:      yatin chalke <yat_33@yahoo.com>
To:        freebsd-questions@FreeBSD.ORG
Subject:   How to set up IP_HDRINCL in FreeBSD??
Message-ID:  <20011112203819.83226.qmail@web9505.mail.yahoo.com>

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Hi,

I am working with raw sockets on freeBsd3.4.

I am creating my own IP & TCP header & want to pass it
along with the packet.

I tried setting up IP_HDRINCL option but it gives me
error in sendto function as "sendto: Invalid argument"

I am using following statement 

 if(setsockopt(sockd,IPPROTO_IP,IP_HDRINCL,(char
*)&on,sizeof(on)) < 0)  {
    perror("setsockopt");
    exit(1);
  }

where int on=1;

I am not able to see required data in IP header as it
is not using this option and generating its own ip
header.

I donno why I am not able to set the IP_HDRINCL
option.

If anyone can help me on this it will be great help.
Thank you.
--Yatin

P.S: I am not on mailing list so if u can please reply
me via e mail , I will be highly obliged.




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