I am using ZeroTier’s free tier to connect my computer, a Raspberry Pi and my phone, and I am loving it. But I have run into one seemingly insurmountable problem. The ZeroTier client on Android seems to be quite a battery hog. As a result I have to keep it switched off most of the time, and manually remember to switch it on now and then so sync’ing etc. will happen.

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Are there any alternatives to ZeroTier, or to the ZeroTier client, that might use less battery on Android?