MAC Address Changing with every Reset?

silvertonesx24 · Nov 19, 2011

Just updated my HD7 to the update with internet sharing. After this, I can confirm that every time I reboot my phone, I get a new mac address. Which prevents me from connecting to my MAC-address-filtered wifi. I've done it 6 times and gotten 6 unique MAC addresses.

Does this happen to anyone else's phone? HD7 specific? or all phones with internet sharing? My internet sharing is turned off.

xHausx · Nov 19, 2011

That's strange, I've never heard of a device with a dynamic MAC address before. Does your phone have one printed under the battery?

silvertonesx24 · Nov 19, 2011

Nope, just IMEI, SN and PN. No MAC address.

This must be related in internet sharing somehow.

xsi · Nov 19, 2011

silvertonesx24 said:
Does this happen to anyone else's phone? HD7 specific? or all phones with internet sharing? My internet sharing is turned off.

I can confirm this on my HD7.
MAC changes on every reboot.

nok_fusion · Nov 19, 2011

I confirm too,i have the issue of mac adress changing every reboot
& my wifi is not visible since the update,My wifi is N and i can only see wifi G near me but not mine

beniusc · Nov 19, 2011

hi

for me too : mac adress change after shutdown.

for time don't shutdown the phone to have same mac adress with my internet box.

htc support tell me that they will answer on monday.

but i think it's a big problem with this update...

Ben

morpheuszg · Nov 19, 2011

That's a bit strange. Normally you can't change MAC's for yourself, only spoofing is possible. If WP is really changing the MAC adress with every reboot, WP needs a valid MAC adress block licensed from IEEE, otherwise it would be a violation against IEEE.

comeradealexi · Nov 19, 2011

I thought mac address we're never aloud to change!?

scoobysnacks · Nov 19, 2011

Lol that's illegal as all hell, a dynamic mac address

woodbane · Nov 20, 2011

Gotta be a glitch in the firmware surely? No way that's allowed. Your definitely sure it's not a dynamic IP address you're seeing?

Sent from my SGH-i917 using Board Express

moonshines · Nov 20, 2011

ive also asked this question a couple of days ago right after applying the htc internet sharing update. and ive posted my question here (entry #38) and people provided good answers about it. hope this helps

Ttblondey · Nov 20, 2011

Yes, mine also changes it's only when i read this thread and test my hd7 and i notice the changes.But I S is a breeze.

N8ter · Nov 20, 2011

The issue is that some people assign static IPs to devices on their home networks, and this is done in most routers via MAC address coupling (MAC a always gets IP z and so forth). That way you can simply block all devices you and people in the residence do not own. I do it on all my machines for development reasons, cause I like knowing I can always use x IP address to get at a certain machine even if I turn it off or it's down for a while for repairs. The IP never changes as long as I continue to use that specific network card in the computer.

I don't know why they would do that. Perhaps for security reasons?

Jonno2343 · Nov 20, 2011

I have the same problem - cannot connect to my University WiFi network as the MAC address keeps on changing....
This is crazy!

scoobysnacks · Nov 20, 2011

They better get on that quick! They could get in a lot of **** for that

primexx · Nov 20, 2011

putting aside the weird WP7 behaviour for the moment...

MAC filtering is useless as a security measure. It's trivially spoofable by anyone who actually wants to attack your network, and causes a pain in the arse for yourself. do yourself a favour and disable it already. the only thing it might be good for is router-side internet access control of your technically challenged 8 year old who doesn't know how to use google.

just use a strong password i.e. 20+ characters alpha (upper & lower) + numeric + special characters, and proper wireless security (WPA-2 AES, or at least WPA AES) and you'll be just fine.

danlvii · Nov 20, 2011

Confirming

That update was a bag full of $$$$ !Luckly I was able to restore through Zune,but my Bootloader (SPL) was also updated to 5.01 and no way of going back!

GrahamWager · Nov 20, 2011

With regards to the missing WiFi network - make sure it's not using Channel 13. The new update seems to disable the use of Channel 13 for some reason.

There is also another issue with the changing MAC's - I believe that some "public" WiFi networks such as the cloud use the MAC to remember your device and allow it to connect...

N8ter · Nov 20, 2011

primexx said:
putting aside the weird WP7 behaviour for the moment...

MAC filtering is useless as a security measure. It's trivially spoofable by anyone who actually wants to attack your network, and causes a pain in the arse for yourself. do yourself a favour and disable it already. the only thing it might be good for is router-side internet access control of your technically challenged 8 year old who doesn't know how to use google.

just use a strong password i.e. 20+ characters alpha (upper & lower) + numeric + special characters, and proper wireless security (WPA-2 AES, or at least WPA AES) and you'll be just fine.

Mac filtering is not useless as a security measure. It's not used by itself. It's used in conjunction with other methods, the same way businesses also hide their wireless network's SSID.

I'm not filtering on an Open Connection. That would be retarded.

Seriously...

moonshines · Nov 20, 2011

GrahamWager said:
With regards to the missing WiFi network - make sure it's not using Channel 13. The new update seems to disable the use of Channel 13 for some reason.

There is also another issue with the changing MAC's - I believe that some "public" WiFi networks such as the cloud use the MAC to remember your device and allow it to connect...

im not sure though but im guessing so does other apps with secured log in parameters. i do have the bank of america app. right after i did the update, and after inluding the new mac to my networks allowed list of mac addresses, the boa app again posted a message saying that the device where im accessing boa has not been used previously to access the account. so im guessing that it saves all the mac addresses of devices that accessed a boa account.

MAC Address Changing with every Reset?

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