When bound to an IP, LAN broadcasts are no longer recieved

[bundabrg]

As per a discussion in Discord when the BedrockServer is bound to an IP instead of 0.0.0.0 it will no longer see broadcast packets and thus not pick up on LAN broadcasts.

A possible solution is to bind to 0.0.0.0 using a MulticastSocket (as opposed to a DatagramSocket) which allows multiple listeners which will receive all broadcast traffic when a specific IP is set in addition to the IP to receive unicast traffic.

[jimbt]

I think an enhancement to RakNetServer::bindInternal to recognize when binding to a specific IP, instead of 0.0.0.0 (i.e. bind all), and including that IP's broadcast IP in channelFutures[]. This would potentially require a thread to handle the one additional broadcast IP.