From 723b9eecb0c739d16e65132bd4c7074bd62e5e45 Mon Sep 17 00:00:00 2001
From: Brad Fitzpatrick <bradfitz@tailscale.com>
Date: Wed, 15 Jul 2020 12:43:48 -0700
Subject: [PATCH] net/interfaces: set SysProcAttr.HideWindow to prevent cmd.exe
 flash on Windows

---
 net/interfaces/interfaces_windows.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/interfaces/interfaces_windows.go b/net/interfaces/interfaces_windows.go
index e16c297d9..5eae126d2 100644
--- a/net/interfaces/interfaces_windows.go
+++ b/net/interfaces/interfaces_windows.go
@@ -6,6 +6,7 @@
 
 import (
 	"os/exec"
+	"syscall"
 
 	"go4.org/mem"
 	"inet.af/netaddr"
@@ -41,6 +42,7 @@ func init() {
 */
 func likelyHomeRouterIPWindows() (ret netaddr.IP, ok bool) {
 	cmd := exec.Command("route", "print", "-4")
+	cmd.SysProcAttr = &syscall.SysProcAttr{HideWindow: true}
 	stdout, err := cmd.StdoutPipe()
 	if err != nil {
 		return