in the website above, it tells me the solution to build the envireoment.

and i choose to use the "unpv13e.tar.gz", because i needn't change any code.

but i still meet some problems.

1.in the readme file, it tells me follows the steps:

===============

Execute the following from the src/ directory:

./configure # try to figure out all implementation differences

cd lib # build the basic library that all programs need

make # use "gmake" everywhere on BSD/OS systems

cd ../libfree # continue building the basic library

make

cd ../libroute # only if your system supports 4.4BSD style routing sockets

make # only if your system supports 4.4BSD style routing sockets

cd ../libxti # only if your system supports XTI

make # only if your system supports XTI

cd ../intro # build and test a basic client program

make daytimetcpcli

./daytimetcpcli 127.0.0.1

=================

but when i exec the cd  "../libroute \n make" and "../libxti \n make"

it occurs"

unproute.h:3:45: fatal error: net/if_dl.h: No such file or directory

compilation terminated.

"

but i choose to ignore these problems. just mark it here. 

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when success to built the program, run it and the result show that "connect error: Connection refused" 

i'm so stupid that forgot to run the server program!

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