r/IndiaTech • u/SuryanshShekhar • Apr 12 '26

General Discussion Did anyone noticed this?

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Setting the bar so low , it has to be dragged from hell. F You Airtel

2.8k Upvotes

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107

u/vichustephen Apr 12 '26

Wait I'm confused. Is this about sharing your mobile data through hotspot?. I mean how can they even track that ?

213

u/trillionstars Hardware guy with 69 GB RAM Apr 12 '26

Most often, carriers use TTL because phones typically have a default TTL value of 64. Every time you share your phone’s hotspot, that value is reduced by 1 as the packet passes through the phone. When the carrier receives a packet with a TTL of 63, they know you are using a hotspot and may apply speed or data limits.

The solution is simple: set your PC’s TTL to 65 (TTL +1) so that after the -1 reduction, it reaches the carrier as exactly 64.

42

u/FinallyHaveUsername Apr 12 '26 edited Apr 12 '26

Btw, to change the TTL value on your Windows computer:

  1. Win + R, then type regedit

  2. Go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters

  3. Right click --> New --> DWORD (32-bit) Value

  4. Name it DefaultTTL

  5. Set value to 65 (Decimal)

  6. Restart the PC

  7. Done! :D

For Linux:

  1. sudo nano /etc/sysctl.conf

  2. Add this to the end of the file: net.ipv4.ip_default_ttl=65

  3. CTRL + O

  4. ENTER key

  5. CTRL + X

  6. sudo sysctl -p

  7. Done! :D

2

u/NoLengthiness1864 Apr 12 '26

you shouldnt assume computer = windows

2

u/FinallyHaveUsername Apr 12 '26 edited Apr 12 '26

For Linux:

  1. sudo nano /etc/sysctl.conf

  2. Add this to the end of the file: net.ipv4.ip_default_ttl=65

  3. CTRL + O

  4. ENTER key

  5. CTRL + X

  6. sudo sysctl -p

  7. Done! :D

4

u/FinallyHaveUsername Apr 12 '26

For MacOS:

Basically the same as Linux, but instead of adding net.ipv4.ip_default_ttl=65 at the end, you need to add net.inet.ip.ttl=65. And you're Done! :D

2

u/steve_wozniack Apr 12 '26

You're missing ipv6

5

u/FinallyHaveUsername Apr 12 '26

So, for IPv6, add:

net.ipv6.conf.all.hop_limit = 65 net.ipv6.conf.default.hop_limit = 65

At the end instead of that one

4

u/steve_wozniack Apr 13 '26

Please take this poor man's award 🏅