A trivial mDNS reflector using Boost::Asio.
$ mdnsreflector listen-subnet reflect-from-ip
The listen-subnet might be something like 10.2.10.0/24, and the reflect-from-ip might be something
like 10.2.11.1. This will listen on the 10.2.10 subnet and rebroadcast all mDNS packets from the
10.2.11.1 interface to its subnet.