Update

vendor/tailscale.com/net/sockopts/sockopts_notwindows.go

@@ -0,0 +1,15 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+//go:build !windows
+
+package sockopts
+
+import (
+	"tailscale.com/types/nettype"
+)
+
+// SetICMPErrImmunity is no-op on non-Windows.
+func SetICMPErrImmunity(pconn nettype.PacketConn) error {
+	return nil
+}