Subject: Building/Testing assn1 on solaris

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If you want to make assn1 build on Solaris (which is
a good idea).  You need to add -lnsl and -lsocket to
the compile/link line in your make file.  -l means
"library" and nsl means nameserver lookup and socket
means socket.  These should work fine (but are not
required) with Linux.

Because of the SOCK_RAW your program WILL NOT WORK
under Solaris (unless you have successfully hacked
Jay's system which I sincerely hope is not the case!)

Your program will be tested by me only on Linux
systems.