I'm working on a personal project that involves ARP requests to a specific/known MAC for IP 0.0.0.0:
Who has 0.0.0.0? Tell x.x.x.x. As far as I'm aware any receiving host should respond to that, but it seems certain OSes (*nix flavours in particular) don't quite adhere. My Android-based phone responds just fine, but none of my OS X/Debian boxes do. They do respond when I ask them specifically about their own IP, so it's not that they disregard unicast requests entirely. I've yet to test Windows.
Any known reason why that is and/or how to fix/work around that? Basically I need to probe a host on my LAN by MAC address and check if it's still around (i.e. responds to the probe). If there's a better way besides ARP to do this I'll take any suggestions, but without sending requests for all possible IPs on the LAN to the specific MAC.