this post was submitted on 04 Jul 2024
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Privacy
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I feel like I'm missing something here...
Who's going to be fingerprinting DHCP messages on your home network?
Outside of that, fingerprinting or tracking any DHCP info would be the least of my concerns. You have 0 control over any data the moment your devices connect to a public network. What use is DHCP info when you can person-in-the middle all the traffic anyway?
And anyway, what info are you concerned about? Having had a VERY quick browse of RFC2131 the worst thing would be "leaking" the device MAC address which can be discovered via several other means anyway
I guess the hostname could be used to defeat MAC randomization if you use public WiFi like hotels, airports and coffee shops. You could probably identify repeat users if you cared enough.
But then your worry should be the security cameras not the WiFi, because that's what's gonna tie you personally to your device connecting.
See the linked page
You need to say more than that about what your concern is, especially on devices configured for Mac randomization and other privacy features.
Aruba is looking at the dhcp traffic and inferring information about the device. The device is not sending all of this data.