Sun Nov  8 21:52:19 PST 1987

This is an experimental tcp for 4.xBSD Unix.  It is being made 
available on a beta-test basis to the Internet network research
community.

This tcp is known to run on Sun-3/x systems running Sun OS v3.3,
Vax 7xx and CCI Tahoe systems running 4.3BSD, VAX VMS systems
running the most recent Wollongong WIN software and Gould systems
running ?? (contact dpk@brl.arpa for Gould details).  It should
run, unmodified, on any stock 4.2 or 4.3BSD machine.  Various
defines to account for system dependencies are at the front of
tcp_var.h.  If xtcp won't work on your system, check the comments
in tcp_var.h to see if there's some obvious change you should
make.  If you have to tweak the configuration to make things
work on your machine, please let van@lbl-csam.arpa know.  We'd
like to make the public release of the code easy-to-install on
as many machines as possible.  That means that any notes you
can send us on installation problems will be invaluable.

The tcp* files in the netinet subdirectory are replacements for the
tcp* files of your 4.[23] distribution (i.e., they should replace the
tcp files in /sys/netinet).  "Makefile" is a makefile to construct tcp
binaries on an object-only Sun system.  The "misc" subdirectory
contains modifications to network related programs:

    misc/netstat/inet.c: modifies "netstat" to print out the new
		tcp statistics.  It is a replacement for
		/usr/src/ucb/netstat/inet.c (you will need source
		to make use of this).


We run this tcp on machines at LBL and on the UCB Campus.
It will likely become the official 4BSD tcp one day.  In the
interim, we have tested things as thoroughly as we could (we
run this tcp on our personnal workstations) but it is reasonable
to expect bugs remain.  If you run this code and hit a
bug, please let Van Jacobson (van@lbl-csam.arpa) know.  He
guarantees that all bugs will be fixed (or at least documented)
promptly.  If you run a copy of this code and want to hear
about problems, fixes and new versions, send your Internet mail
address to Van.

Good luck.

	Van Jacobson, Lawrence Berkeley Laboratory
	Mike Karels, U C Berkeley
