Update

vendor/tailscale.com/control/controlclient/client.go

@@ -1,4 +1,4 @@
-// Copyright (c) Tailscale Inc & AUTHORS
+// Copyright (c) Tailscale Inc & contributors
 // SPDX-License-Identifier: BSD-3-Clause
 
 // Package controlclient implements the client for the Tailscale
@@ -87,13 +87,10 @@ type Client interface {
 	// future map requests. This should be called after rotating the discovery key.
 	// Note: the auto client uploads the new key to control immediately.
 	SetDiscoPublicKey(key.DiscoPublic)
+	// SetIPForwardingBroken updates the IP forwarding broken state
+	// and sends a control update if the value changed.
+	SetIPForwardingBroken(bool)
 	// ClientID returns the ClientID of a client. This ID is meant to
 	// distinguish one client from another.
 	ClientID() int64
 }
-
-// UserVisibleError is an error that should be shown to users.
-type UserVisibleError string
-
-func (e UserVisibleError) Error() string            { return string(e) }
-func (e UserVisibleError) UserVisibleError() string { return string(e) }