No Airport, another computer using my IP address
I do not have Airport on my Mac and yet got the message that another computer on the network was using my IP address.
This is the first time I have ever seen this message in over 20 years of using various Macs, and certainly not since everything went wireless.
There is at least one other Mac and two iPhones in the house, not mine, and I am wondering what's going on.
Can anyone advise?
Cheers.