this post was submitted on 20 Sep 2023
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What I would personally do is buy a device that can connected to wifi and hotspot at the same time. This can be a raspberry pi or a wifi router range extender.
I would set the name and MAC address to match a device that is constantly connected, a smart TV or Alexa maybe.
Then I would use this device connect to the internet.
Everything works as usual and for those who monitor the network via Router settings, nothing looks different.
Have fun pulling risky moves and maybe also learn something out of it.
One of these is $40 USD, and can be configured to provide a VPN for all through-traffic. They're small, portable, discrete, and cheap. I love these devices. The slightly more expensive model gives you WiFi 6. They were designed as portable bridges for insecure locations, creating a private LAN; they are powered by USB-C, so could be run off a laptop.
This would be the first thing I'd try.
Deliberately duplicate a mac address, and worse, deliberately pick a device that's definitely going to be online in the same network segment?
At first I thought you were either trolling or profoundly ignorant.
Then I remembered that wifi is CSMA, and thought, hang on... is this actually a genius idea? Has this user come up with a hack that no-one else knows about? So I tried it.
It doesn't work. I couldn't even join.
So no, you are either trolling or ignorant.
Hers some discussion and links, for anyone interested: https://superuser.com/questions/1132935/duplicate-mac-on-a-wifi-network-problems
I think you are missing my point. The "pretending" device connects to router, while the "original" device connects to the pretending device. The 2 interfaces that share the same MAC don't connect to the same network.
The user also conncets to the pretending device. to hide their access to the router.
Ahhh, thanks! Please excuse my error - I am attempting to perform computation using a kilo of wet squidgy protein and fat.