This is a test program to check the SO_TIMESTAMP functionality on FreeBSD. It includes both client and server and depends on functionality which was included into FreeBSD HEAD by https://svnweb.freebsd.org/base?view=revision&revision=325507.

Usage:

	timestamp -s options -- server mode
	timestamp -c options -- client mode

Options:

	-t timestampt format, use -t help to see possible values
	-h address to listen to (server mode), to sends packets to (client mode)
	-p port
	-a count -- process specified number of packets
	-d ms -- client mode, delay between sends

Client sends packets to server, server bounces the received packets back to the client. In each packet there are four slots for timestamps:

• client send
• server receive
• server send
• client receive

Corresponding process fills the slot. After reception, client prints all the slots, together with flags indicating hardware and high-precision stamp.