Mac address changes each boot -_- - Galaxy Ace S5830i Q&A, Help & Troubleshooting

Hi all,
I usually use stock rom but i decided to try this one :
MindCr Rom V2.8 : http://forum.xda-developers.com/showthread.php?t=1925850
Everything was fine ... then i noticed that my mac adress changes everytime i restart my Android !
The problem is my network is secure with filtering mac
Any idea ? I wonder how is that possible ...

Wait what? To my knowledge MAC addresses are something a company has to buy to implemented it in each network card unit. They are in other words not dynamic. Are you maybe referring to IP-address?

QNBT said:
Wait what? To my knowledge MAC addresses are something a company has to buy to implemented it in each network card unit. They are in other words not dynamic. Are you maybe referring to IP-address?
Click to expand...
Click to collapse
Im computer scientist so i was worried too about this. IP-adress is not changing : i cant connect to my network so i dont have one.
Fact is, this ROM is changing my MAC adress every time, even if i know it's very weird.
Trying to find another ROM ... : (

you guys are wrong, you can change your mac adress, but regarding to your issue i dont know what might be causing that.

Qnrx said:
you guys are wrong, you can change your mac adress, but regarding to your issue i dont know what might be causing that.
Click to expand...
Click to collapse
Don't think that is true. You can spoof it but that is not permanent, and I have no idea why the rom would have the functionality to spoof ones mac address. Maybe you could try to spoof your mac into one of the mac-addresses that are accepted. Did a quick google search and you don't seem to be the only one, do some reading and you might find something.

Hey
Op check this might help you
http://forum.xda-developers.com/showthread.php?t=2121151
Sent from my GT-S5830i using xda premium

rahulnandwani said:
Hey
Op check this might help you
http://forum.xda-developers.com/showthread.php?t=2121151
Sent from my GT-S5830i using xda premium
Click to expand...
Click to collapse
Thanks you all !
But i finnaly dropped my phone and broke the screen lol ... si i dont care about a nice rom now ^_^
At least, I learned that it's possible to change the mac adress on Android

You can change your mac address by changing it in the files :
/system/etc/wifi/nvram.txt
/system/etc/wifi/nvram_mfg.txt
With these files changed when you activate wifi for the first time it will create a new file in internal memory with that mac address : /data/.mac.info
If that file already exists the wifi will use the mac address contained in it.
When changing only .mac.info with another address it would be temporary and will be reset after a factory reset.

Related

Mac address

Can someone tell me where the Mac address is stored in SGS2.
I have found /etc/wifi/nvram_net.txt but in that file it is a different mac address then the one i see in wifi advanced settings.
/Mike
Anyone?
I really need this information.
/Mike
Be a pioneer, try the two options and post the result here.
Sent from my GT-I9100 using XDA Premium App
Have been a pioneer .
But it did not help to change in nvram_net.txt.
Doesn't anyone know in what file the mac address is stored?
/Mike
Menu > settings > About phone > Status > wifi mac address
(if that is what I understand from question)
Thanks
But i want to know in what file in the os the mac address is stored so i can change it.
/Mike
Leahcim said:
Thanks
But i want to know in what file in the os the mac address is stored so i can change it.
/Mike
Click to expand...
Click to collapse
I actually thought it was chipware (pic) stored on the actual wifi hardware. I know you should be able to override.
How do I override it?
/Mike
Dunno, much like linux I would guess, why do u want to?
Sent from my GT-I9100 using XDA Premium App
Having problem with a hotspot in a hotel.
I want to set the same mac address as in my pc. Then I can use the PC to login and then switch over to my phone.
How do i do in linux?
/Mike
Anyone?
/Mike
Leahcim said:
Having problem with a hotspot in a hotel.
I want to set the same mac address as in my pc. Then I can use the PC to login and then switch over to my phone.
How do i do in linux?
/Mike
Click to expand...
Click to collapse
Not the best of ideas, and may not even work, why not sign in on your phone?
And for your "How do i do in linux?" question, you use goolge to search for a query that millions will have had for the widest used classification of operating system in the world
But... a simple google search gives
http://www.robmcghee.com/android/changing-the-mac-address-on-android/
I am in a hotel and with a pc connect to the hotspot and get a wifi connection:
Then when i start to surf i get redirected to http://hyd.guestnet.int/login/
Where i fill in username and password in a form and i send the information to http://1.1.1.1/logon.cgi.
On my phone i get a wifi connection but is not redirected and i can not surf to http://hyd.guestnet.int/login/
I have tried all ways that is described but none is successful.
That is the reason I wonder if someone knows how i can change the mac in os on a SGS2.
/Mike
you tried downloading opera or firefox for your mobile? Either or may make it so you can login on that form?
Easier solution if it works
deanwray said:
you tried downloading opera or firefox for your mobile? Either or may make it so you can login on that form?
Easier solution if it works
Click to expand...
Click to collapse
Have tried Opera mobile, firefox and dolphin, none is working.
/Mike
Don't forget to set the User Agent of Opera/Firefox/Dolphin to Desktop. Does the hotel ask for a login in the form of a website, or is it a dialogue box? Because websites can easily load on your phone.
I have the Useragent set to Desktop.
The hotel redirect me to a webpage http://hyd.guestnet.int/login/
Where i fill in username and password in a form and i send the information to http://1.1.1.1/logon.cgi.
On my phone i get a wifi connection but is not redirected and i can not surf to http://hyd.guestnet.int/login/
I can not get the phone to show the webpage with login.
Now i was thinking to set the same mac addres on my phone as on the pc and use the pc to logon and then switch of wifi on pc and turn it on on the phone.
/Mike
Is it possible to change the mac address on SGS2?
/Mike

[Q] How do you change your mac address?

Anyone know how to change the wifi mac address on our phones?
Edit: I did find this earlier but i wanted to hear from others. http://blog.thecodecracker.com/hacks/spoof-mac-address-in-android/
For the SGS2 you can change the mac is just a little triky, you need to change the mac whit this conmand “busybox ifconfig eth0 hw ether 00:00:00:00:00:00″ while you are still conected to the wifi, and the run this conmand “netcfg eth0 dhcp” that will make a renew on your ip adress and will get you conected sorry for my eng
Click to expand...
Click to collapse
Untested. Only thing I could find that is said to work with ours. I was hoping for a app, doesn't like like it.
cwc3 said:
Untested. Only thing I could find that is said to work with ours. I was hoping for a app, doesn't like like it.
Click to expand...
Click to collapse
Not to bring things back from the dead, but I would really be like to able change mac address of my phone. The above method works not. I think it is a kernel problem. Does anyone have kernel that supports mac address changing?

No notification,No viber while connected to WiFi

I swear i did search!
Thats why i had to create an account and ask!
I use my provider data package and i dont have any problem with the galaxy s3!
But when im home i connect to WIFI and while im connected to wifi i dont get notification from Gmail,Viber,Facebook and so on..but for example whatsapp works fine!
And i have to say it wasnt like this!i dont know if Firmware update caused this or an App!
If i want to know what is happening i should disconnect then all the notifications start to pop up!
Anybody knows what is the problem with Wireless internet connection?
Thanks in advance,
Asgharjoon said:
I swear i did search!
Thats why i had to create an account and ask!
I use my provider data package and i dont have any problem with the galaxy s3!
But when im home i connect to WIFI and while im connected to wifi i dont get notification from Gmail,Viber,Facebook and so on..but for example whatsapp works fine!
And i have to say it wasnt like this!i dont know if Firmware update caused this or an App!
If i want to know what is happening i should disconnect then all the notifications start to pop up!
Anybody knows what is the problem with Wireless internet connection?
Thanks in advance,
Click to expand...
Click to collapse
Seriously?no one knows?
i thought i ll get an answer in this forum
Asgharjoon said:
Seriously?no one knows?
i thought i ll get an answer in this forum
Click to expand...
Click to collapse
try changing your DNS to any universal one(search google for universal DSN servers) or use 4.2.2.2
I had the same problem on my iPhone and that fixed it.. never tried on S3 though.
life_hacker said:
try changing your DNS to any universal one(search google for universal DSN servers) or use 4.2.2.2
I had the same problem on my iPhone and that fixed it.. never tried on S3 though.
Click to expand...
Click to collapse
Thanks for your respond!
the problem is i can come online using wifi!there is no problem with surfing the net!
the only problem is i dont get notifications from facebook from viber and lots of apps!
i have no idea what coudl be wrong!
Asgharjoon said:
Thanks for your respond!
the problem is i can come online using wifi!there is no problem with surfing the net!
the only problem is i dont get notifications from facebook from viber and lots of apps!
i have no idea what coudl be wrong!
Click to expand...
Click to collapse
yes dude, i understood your problem. and the solution i gave you is for the same issue. just try a universal DNS server, i hope that would fix it.
life_hacker said:
yes dude, i understood your problem. and the solution i gave you is for the same issue. just try a universal DNS server, i hope that would fix it.
Click to expand...
Click to collapse
How to change DNS server on samsung galaxy s3?
Thats the question now
Asgharjoon said:
How to change DNS server on samsung galaxy s3?
Thats the question now
Click to expand...
Click to collapse
you can either use SET DNS form Play Store. or change it on your router by going to the configuration window.
life_hacker said:
you can either use SET DNS form Play Store. or change it on your router by going to the configuration window.
Click to expand...
Click to collapse
I did it!
i changed the DNS in router config change!
Nothing happened!problem still exists!
UPnP
Asgharjoon said:
I did it!
i changed the DNS in router config change!
Nothing happened!problem still exists!
Click to expand...
Click to collapse
Please check the UPnP settings in your router, it should be on "enabled"
Benyaminko said:
Please check the UPnP settings in your router, it should be on "enabled"
Click to expand...
Click to collapse
I couldnt fine this option in router setting page!
But i changed the DNS and it worked for a while now its again the same story its not stable sometimes its working good sometimes not!
anyone knows the best public DNS server for galaxy s3?

MAC address changing periodically.

I've noticed that the WiFi MAC address on my OG has been changing periodically. I first started noticing it on Monday when I was running the Team Nocturnal ROM. Since then I've done a factory reset and now I'm running The Base 0.7.3 and it's still occurring . The first 6 digits of the address are always "00:11:22" and the last 6 seem to be random. I grepped through the /system partition and the only reference to "00:11:22" was in an example config file, so I'm sort of stumped.
My guess is the MAC address is defined by the kernel somewhere? I'm using the freegee 0.5 kernel (3.0.21) . I'm going to try flashing KernelSk8 soon, I'll post my results. Has anyone else noticed this?
Thanks!
AFAIK, MAC address shouldn't change. The first 6 digits of the MAC are supposed to identify the manufacturer of the device - in our case A8:16:B2 = LG Electronics.
You can spoof it, but shouldn't need to. I have no idea why yours would be changing - there shouldn't be a need to.
Yea, I know it shouldn't change, which is why it's an issue At work I have to register my MAC address with the WiFi router in order to get access to the network.
I flashed sk8's kernel and I still have the same issue. I did a little more poking around and it seems to set the MAC address on startup. Does anyone know where the MAC address is set? I thought it was in the kernel but apparently not.
Thanks!
From what I can tell, this is a not-uncommon side effect of installing third-party ROMs on the phone. The last half of the the address gets randomized every time you reboot. This started happening to me after a Nexus 4 conversion -- and it remained even after re-installing the stock ROM.
On the other hand, restricting network access my MAC address isn't that secure. You're better off with a strong password and WPA2 with 256-bit encryption. Your workplace may require MAC filtering, however.
MZille said:
From what I can tell, this is a not-uncommon side effect of installing third-party ROMs on the phone. The last half of the the address gets randomized every time you reboot. This started happening to me after a Nexus 4 conversion -- and it remained even after re-installing the stock ROM.
On the other hand, restricting network access my MAC address isn't that secure. You're better off with a strong password and WPA2 with 256-bit encryption. Your workplace may require MAC filtering, however.
Click to expand...
Click to collapse
Thanks for the reply. It's good to know that I'm not the only person having this problem. This must be another undocumented side effect of the Nexus 4 conversion. You're right, it's my work that requires me to register my MAC address. It's really annoying to have to register the device everyday, and if I forget then my email doesn't come through.
Is there anyone that can give me any hints on where the MAC address might be (re)assigned? Or even what android OS system utilities might be used to change the address?
I can find a bunch of Google results for spoofing and changing MAC addresses, but discussion of *preventing* alteration is hard to find. You can apparently use Busybox to set whatever MAC address you like, but it's not clear if the phone retains this setting if it gets rebooted. I'd check right now, but I'm in the middle of a Titanium backup.
Edit: I imagine that you can create a shell script to automate changing the address whenever you need to.
Hi,
I know this is kind of old thread but i am having this issue of MAC address changing on every reboot after installing Candy 5, can someone please point me to a solution. ( its a problem for me as i have to register my MAC at workplace and everyday its changing and causing issues with my work network connection )
Any help would be appreciated.
MZille said:
I can find a bunch of Google results for spoofing and changing MAC addresses, but discussion of *preventing* alteration is hard to find. You can apparently use Busybox to set whatever MAC address you like, but it's not clear if the phone retains this setting if it gets rebooted. I'd check right now, but I'm in the middle of a Titanium backup.
Edit: I imagine that you can create a shell script to automate changing the address whenever you need to.
Click to expand...
Click to collapse

[Q] Blocked from connecting to my home wifi.

Hey guys,
My Father changed something in the router settings yesterday which blocked only me and my brother from connecting to the Wifi.
Anyone else can connect normally and gain Internet access. It is a password protected access point but I have the password and I entered it correctly and it connected but it says "Authentication error occurred".
Does anyone have an idea of what he blocked? Mac address? IP? what? and how can I change it?
Thanks in advance!
AytchG said:
Hey guys,
My Father changed something in the router settings yesterday which blocked only me and my brother from connecting to the Wifi.
Anyone else can connect normally and gain Internet access. It is a password protected access point but I have the password and I entered it correctly and it connected but it says "Authentication error occurred".
Does anyone have an idea of what he blocked? Mac address? IP? what? and how can I change it?
Thanks in advance!
Click to expand...
Click to collapse
Mac address definitely. I would also offer he reserved IP addresses to certain Mac adds & limited number of ip address (i.e., 2 or 3 vs 255). Can you get local access & then access router w/its id name & password?
OffcerClancy said:
Mac address definitely. I would also offer he reserved IP addresses to certain Mac adds & limited number of ip address (i.e., 2 or 3 vs 255). Can you get local access & then access router w/its id name & password?
Click to expand...
Click to collapse
Hmm no only he has the username and password... can you tell me how to do it with the ip address and mac changing without root?
AytchG said:
Hmm no only he has the username and password... can you tell me how to do it with the ip address and mac changing without root?
Click to expand...
Click to collapse
I have only once changed Mac add & that was inadvertantly & rooted. Don't know if Mac add can be changed w/o root. IP address theory might be tested using a VPN app (may still need connection) or app such as Hide My Ass.
Good luck.
Edit: Now that I think about it, you can't test IP theory w/o outside connection. Sorry.
OffcerClancy said:
I have only once changed Mac add & that was inadvertantly & rooted. Don't know if Mac add can be changed w/o root. IP address theory might be tested using a VPN app (may still need connection) or app such as Hide My Ass.
Good luck.
Edit: Now that I think about it, you can't test IP theory w/o outside connection. Sorry.
Click to expand...
Click to collapse
Never mind, I rooted my s3 mini, installed busybox and used an apk called Mac Spoof and it worked like a charm!!
Thanks for your help and time!!!

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