What does"IP_ADD_MEMBERSHIP: No such device "mean?
It means that the tool is trying to use multicast but the network interface doesn't support it There are two likely causes:
·Your machine doesn't have multicast support enabled. For example, on Linux and FreeBSD it is possible to compile a kernel which doesn't support multicast.
·You don't have a route for multicast traffic. Some systems don't add this by default, and you need to run：
-
route add -net 224.0.0.0 netmask 224.0.0.0 eth0 (or similar).
If you wish to use RAT in unicast mode only, it is possible to add the multicast route on the loopback interface.
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