For this, you must use the CVS version of VLC and compile it with ./configure --enable-dvb This feature should still be considered as experimental.
% vlc -vvv --program 8211 dvb:12597000:0:3:27500000 --sout udp:192.168.0.12 --ttl 12
8211 is the PID of the DVB channel you would like to stream, expressed as a decimal number ;
12597000 is the frequency of the transponder you want to stream from in Hz;
0 is the polarization (0 for vertical, 1 for horizontal) ;
3 is the FEC (3 for 3/4, 9 for auto) ;
27500000 is the transponder symbol rate in Hz ;
192.168.0.12 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 the 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).