High battery usage in iOS

I was checking my phone battery health today, when I realised that Tailscale is the 2 highest battery drainer in the las 10 days, just after Safari, which I use heavily.

Is this expected ?

When I was using the Wireguard app (for basically the same purpose, dns tunnel for pihole) I did’t have that issue.

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I can confirm this. This is still true whether the connection is active or not.

The only way to limit the battery usage is to force-quit Tailscale. Then the usage (naturally) goes away.

Usage while active is ok in my book, but when it’s disconnected, it should not consume the amount of battery power it does.

Seeing the same on my iPhone.