diff --git a/.golangci.yml b/.golangci.yml
index cac85d1..7aa7aff 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -6,6 +6,10 @@ linters:
 #    - gci
     - staticcheck
 
+issues:
+  exclude-dirs:
+    - internal
+
 linters-settings:
 #  gci:
 #    sections:
diff --git a/tun_windows.go b/tun_windows.go
index fa2c69f..2cd11e4 100644
--- a/tun_windows.go
+++ b/tun_windows.go
@@ -114,6 +114,9 @@ func (t *NativeTun) configure() error {
 				err = luid.AddRoute(routeRange, netip.IPv6Unspecified(), 0)
 			}
 		}
+		if err != nil {
+			return err
+		}
 		err = windnsapi.FlushResolverCache()
 		if err != nil {
 			return err