tailscale/net/tstun/tun_macos.go

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// Copyright (c) 2021 Tailscale Inc & AUTHORS All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build darwin && !ios
// +build darwin,!ios
package tstun
import (
"os"
"tailscale.com/types/logger"
)
func init() {
tunDiagnoseFailure = diagnoseDarwinTUNFailure
}
func diagnoseDarwinTUNFailure(tunName string, logf logger.Logf, err error) {
if os.Getuid() != 0 {
logf("failed to create TUN device as non-root user; use 'sudo tailscaled', or run under launchd with 'sudo tailscaled install-system-daemon'")
}
if tunName != "utun" {
logf("failed to create TUN device %q; try using tun device \"utun\" instead for automatic selection", tunName)
}
}