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How2 enable multicast

From How2s

If you want to use Multicast on one of your network interface, you can enable it with the following commands:

ifconfig eth0 multicast
route add -net 224.0.0.0 netmask 240.0.0.0 dev eth0

This is also required if you are programming and want to use MulticastSockets (e.g., in Java).

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