diff --git a/frontend/src/NetworkConfigManager.jsx b/frontend/src/NetworkConfigManager.jsx
index fa5860b..534d5ff 100644
--- a/frontend/src/NetworkConfigManager.jsx
+++ b/frontend/src/NetworkConfigManager.jsx
@@ -1412,7 +1412,8 @@ function NetworkConfigManager() {
         server2Name: server1Name,
         server2Info: server1,
         ipsecPasswordId: (iface.ipsecPasswordId && iface.ipsecPasswordId.trim() !== '') ? iface.ipsecPasswordId.trim() : null,
-        ipsecPassword: (iface.ipsecPasswordId && iface.ipsecPasswordId.trim() !== '') ? (passwordMap[iface.ipsecPasswordId.trim()] || null) : null
+        ipsecPassword: (iface.ipsecPasswordId && iface.ipsecPasswordId.trim() !== '') ? (passwordMap[iface.ipsecPasswordId.trim()] || null) : null,
+        mtu: iface.mtu || null
       });
     });