This is possible under GNU/Linux only .
% vls -vv -d udp:192.168.0.42 dvd:/dev/dvd --ttl 12
/dev/dvd is the name of your DVD drive or the directory where you copied your DVD ,
192.168.0.42 is either :
the IP address of the machine you want to unicast to ;
or the DNS name the machine you want to unicast to ;
or a multicast IP address .
12 is the value of the TTL (Time To Live) of your IP packets (which means that the stream will be able to cross 11 routers) .
If you want to stream the DVD continuously, add the --loop option .