libpcap timestamp for sending a packet ?

["J S" <geekreader () gmail com>]

Hello
I am setting up a framework for measuring one way delay between two Internet
end points.
For higher accuracy I am using libpcap time stamps (from the packet header)
at the reciever.
Does any one know if there is any method for improving accuracy at the
sender side.
Is it possible for sender's NIC to log the time stamp the packet was sent?
or any other idea ?

Regards

J S
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