How to Tether NordVPN internet from Android to Laptop?
Answer from NordVPN support of ID #555274
Unfortunately, when you are using VPN your device automatically becomes unreachable to any other devices due to safety so sadly you won't be able to use usb tether while VPN is active.
I asked further why this is going to be changed in NordVPN. Why it cannot be guaranteed at the moment?
Unfortunately, it's technically impossible to make a device to be reachable when it uses VPN. Maybe someday someone will find how to make unreachable device to become reachable when VPN is active but for know there is no solution.
I think this is not right because you can create a virtual machine which handles the ports for you. Please, see
- My Apple threads but applicable in Linux How to Mimic Location of Slave VPN for Primary VPN?How to Mimic Location of Slave VPN for Primary VPN? since you cannot split the tunneling as observed in the thread How to Do Split Tunnelling with Slave ppp0 VPN + 2nd VPN?
Differential solution:
Same security policy is used with openvpn
terminal application in Debian OS.
So it can be easier to test it first there and understand the situation better.
Differential condition: NordVPN Android application does not keep VPN active all the time
When you lock your phone the internet might disconnect for few seconds because of battery save feature on phone. However it should reconnect when you unlock your phone.
I think the battery save explanation is sound here.