From 0540b68af0cfe2cde42c00f60f5f1c69a4d8fdf3 Mon Sep 17 00:00:00 2001
From: "Robin E. R. Davies" <rerdavies@gmail.com>
Date: Mon, 25 Nov 2024 23:52:43 -0500
Subject: [PATCH] arm64 build break

---
 src/Ipv6Helpers.hpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/Ipv6Helpers.hpp b/src/Ipv6Helpers.hpp
index 541d88d..1400f2f 100644
--- a/src/Ipv6Helpers.hpp
+++ b/src/Ipv6Helpers.hpp
@@ -22,6 +22,7 @@
 #include <string>
 #include <utility>
 #include <boost/asio.hpp>
+#include <optional>
 
 namespace pipedal {
     enum class NetworkInterfaceType {