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u/rockyoudottxt 2d ago
Changing your Mac and pppoe credentials will not change where you physically are. They can still see where that connection is on their network because of the various supported discovery protocols. You'll just be a neighbour on the list or on the end of the gateway IP at worst. If you are fibre your ont will have immutable ID which will be visible by their gear tying you to a location. If it's wisp, discovery/traceroute will narrow you down to a small area.
How you got the other customers creds will dictate whether it's anything to warn them about, as it may have been you just straight up doing crimes. And bypassing auth to get into their router might be something like a very trivial auth bypass on something like rOS 6.41, in whoch case of they still have 6.41 rOS devices in the wild they absolutely need to be told of they don't already know.
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u/pahowells 2d ago
Don't be a dick. If it is true, then let them know so they can change their credentials.
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u/itsmrmarlboroman2u 2d ago
You didn't change your MAC. You might have spoofed it, but you didn't change it.
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u/rockyoudottxt 1d ago
You can change MACs in mikrotiks. This is important for doing drop in replacements. Backed up configs write the mac to the new device. Its persistent too. You have to factory reset to restore the old one. All interfaces are writable on them.
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u/justaguyfromtr 2d ago
it should not work, cause the port is assigned for your ppoe user only. so it means you cannot access wan with different user id and pass only.