HMM this should be interesting to see how they are going to pull this off in the era of DHCP.
MY IP address changes almost daily, depending on if my computer has had an on/off cycle that day or not. Have seen it change multiple times in one hour before when I was having issues with my router - I had to keep releasing and renewing due to the router barfing.
And at Comcast we only store 6 months of DHCP lease records. After that they get purged!
It is the router’s address that is at issue, not a node on your LAN.