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> AFAIK this wouldn't work because MAC addresses don't get forwarded to the next network segment Finally! I was scrolling down the comments, starting to think
by kiallmacinnes 7y ago
> AFAIK this wouldn't work because MAC addresses don't get forwarded to the next network segment
Finally! I was scrolling down the comments, starting to think nobody on HN knew networking enough to notice this.
MAC addresses never "leave" the local network segment, so can't be used for tracking tethering unless the phone has code to forward this info on. But, at that point, the MAC address isn't really needed anymore ;)
- no_carrier 7y agoDoes 4G even use the concept of a MAC address? I'm not familiar enough with the protocol to comment, but MAC addresses are usually an Ethernet conecpt.
- kiallmacinnes 7y agoI believe it does use MAC addresses, just obviously the link layer is different. I'm not 100% certain though as I haven't gone deep into 4G!