Add Tailscale endpoint

protocol/tailscale/protect_android.go

@@ -0,0 +1,16 @@
+package tailscale
+
+import (
+	"github.com/sagernet/sing-box/experimental/libbox/platform"
+	"github.com/sagernet/tailscale/net/netns"
+)
+
+func setAndroidProtectFunc(platformInterface platform.Interface) {
+	if platformInterface != nil {
+		netns.SetAndroidProtectFunc(func(fd int) error {
+			return platformInterface.AutoDetectInterfaceControl(fd)
+		})
+	} else {
+		netns.SetAndroidProtectFunc(nil)
+	}
+}