IP: multicasting


Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>IP: multicasting
In linux kernel since version 2.6.12  
This is code for addressing several networked computers at once,
enlarging your kernel by about 2 KB. You need multicasting if you
intend to participate in the MBONE, a high bandwidth network on top
of the Internet which carries audio and video broadcasts. More
information about the MBONE is on the WWW at
<https://www.savetz.com/mbone/>. For most people, it's safe to say N.