Update dependencies

vendor/tailscale.com/wgengine/router/router_freebsd.go

@@ -0,0 +1,31 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+package router
+
+import (
+	"github.com/tailscale/wireguard-go/tun"
+	"tailscale.com/health"
+	"tailscale.com/net/netmon"
+	"tailscale.com/types/logger"
+)
+
+// For now this router only supports the userspace WireGuard implementations.
+//
+// Work is currently underway for an in-kernel FreeBSD implementation of wireguard
+// https://svnweb.freebsd.org/base?view=revision&revision=357986
+
+func newUserspaceRouter(logf logger.Logf, tundev tun.Device, netMon *netmon.Monitor, health *health.Tracker) (Router, error) {
+	return newUserspaceBSDRouter(logf, tundev, netMon, health)
+}
+
+func cleanUp(logf logger.Logf, interfaceName string) {
+	// If the interface was left behind, ifconfig down will not remove it.
+	// In fact, this will leave a system in a tainted state where starting tailscaled
+	// will result in "interface tailscale0 already exists"
+	// until the defunct interface is ifconfig-destroyed.
+	ifup := []string{"ifconfig", interfaceName, "destroy"}
+	if out, err := cmd(ifup...).CombinedOutput(); err != nil {
+		logf("ifconfig destroy: %v\n%s", err, out)
+	}
+}