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[CM1000] Are MAC Addresses guaranteed to be unique?
I'm also contacting support through traditional channels, but I wanted to see if I could get a more informative response through this:
I have a CM1000 modem that I recently bought; while it seems to function fine, when attempting to activate with Comcast, they claim that the Mac address for my modem is actively in use by another household in a completely different part of the country.
Given that I both have the modem in hand and I bought it new, this seems unlikely if the Mac address of the modem is truly unique.
While I am currently more suspicious of Comcast's book-keeping than of a lack of uniqueness in the Mac addresses of Netgear modems, I am nevertheless curious whether there is any guarantee from Netgear that the Mac address on a particular device will be globally unique.
> [...] CM1000 modem that I recently bought; [...]
New? Used? Other?
> [...] while it seems to function fine, when attempting to activate
> with Comcast, they claim that the [MAC] address for my modem is
> actively in use by another household in a completely different part of
> the country. [...]I know nothing, but:
3 Replies
> [...] CM1000 modem that I recently bought; [...]
New? Used? Other?
> [...] while it seems to function fine, when attempting to activate
> with Comcast, they claim that the [MAC] address for my modem is
> actively in use by another household in a completely different part of
> the country. [...]I know nothing, but:
New? Used? Other?
New
I know nothing, but:
https://community.netgear.com/t5/x/x/m-p/1664467
Huh. That exactly describes my issue.Called Netgear support and they are going to send me a new modem. Great on Netgear support; a bit disappointed that I had to do this in the first place, and Comcast support was manifestly unhelpful, but Netgear has handled as well as could be expected.