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VW to get Tesla supercharger access in March (US)

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#1,331 ·
Idk if the Audi/Porsche models have the same issue as the id4 where they all share the same static MAC address. Maybe related to that?
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I'm fairly certain that's not true at all. I've read about a "rotating" MAC address, similar to how phones change their MAC address when connecting to networks. But these cars don't all share the same MAC address, they change and that's a reason they can't be used to identify the car. I think that fact got mistranslated and spread.
 
#1,332 ·
So my limited understanding is that randomly generated MAC addresses do indeed conflict from time to time.

I'm thinking that because MAC randomization is a standard feature of Android, and there are a couple billion Android devices in the wild, true randomization with non-repeating addresses is not practical. There are around 300 trillion unique combinations, but that would get eaten into quickly with randomization and disposal.

So while I understand two devices sharing a MAC can be problematic to a network, there must be workarounds in place to solve this occasional conflict.

And remember the MAC randomization is intended to be more of a privacy attribute, not a security attribute. For services like Plug & Charge this remains true. However for Autocharge+, I believe MAC is the only attribute, and in this case is being used as a security feature and as such has been deemed by network professionals as "not secure."
 
#1,355 ·
Networks will temporarily disable both devices that share the same mac address. There are up to 281 billion mac addresses, so a collision between randomly generated addresses is very small. Like winning the Powerball lol.
 
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#1,335 ·
The only special requirement in the US that I know of is that Tesla seems to want to identify the vehicle manufacturer, so they can exclude non-partner vehicles. I don't know if they are taking a similar approach in Europe or not.

Beyond that, it is kind of guesswork on our part as to the nature of the actual technical difficulty.
 
#1,369 ·
My comment back on that email was similar. "Been within 150 miles of home and solar home charging. However, also, when I needed you on my 1300 mile round trip to the SF Bay Area, your system let me down. EVERY charging facility had at least one of four charging stands out of commission. The ones that did work were "balanced" and thus charged at a lower speed than posted on the unit. There were even labels, possibly posted by fellow members, which indicated the unacceptable charging rates of around 35 kwh on several of the charging stands. All this meant I had to charge more often wasting over 3 hours one way, turning a typical 12-13 hour trip into a 15-16 hour trip." Response - Crickets -
2023 VW ID.4 Pro S.
 
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