Setting DF bit in IP header.
From: Rajat (myself_rajat_at_yahoo.com)
Date: 06/29/04
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Date: 29 Jun 2004 07:04:01 -0700
Hello All,
Can any body tell me, How to set the DF bit for IP header over Linux
OS. As right now I am using setsockopt(), with option IP_MTU_DISCOVER
and optval as IP_PMTUDISC_DO. Like,
int optval = IP_PMTUDISC_DO;
err_code = setsockopt(socket,
SOL_IP,
IP_MTU_DISCOVER,
&optval,
sizeof(int));
But this option also forces the PMTUD for the given socket, that I
don't want. This PMTUD I am implementing by my own.
So can you tell me any other way to set it ON.
I am also not intrested in setting IP_HDRINCL option, to provide my
own IP header while sending, for just setting the DF bit value.
Thanks in advance.
Rajat.
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