I have got a simple question, I am doing a broadcasted ping request on my local network, using a Mac with the latest Yosemite 10.10.4.
ping 255.255.255.255, I get responses from a bunch of devices ( all on the local 10.11.204.XX network, with 255.255.255.0 mask). But if I look into the ARP table with
arp -a, I can not see any of the devices that responded to my ping request. I only can see the broadcast IP and MAC address in the table (10.11.204.255 | ff:ff:ff:ff:ff:ff).
However, if I ping individually each device, then they appear into the ARP table. Why is this behavior ?
Then, if I leave the ping request looping, I will see after a while and only sometimes, some of the devices's IPs. This is really strange for me.