diff --git a/scripts/locales/en.lua b/scripts/locales/en.lua
index 72d5ade5b5..d21e6f4f52 100644
--- a/scripts/locales/en.lua
+++ b/scripts/locales/en.lua
@@ -1908,6 +1908,8 @@ local lang = {
     ["mac_lease_exists"] = "A static lease for mac \"%{mac}\" already exists.",
     ["max_bps_per_host"] = "Max %{bps} per Host",
     ["max_perc"] = "Max %{perc}%%",
+    ["max_rrt"] = "Max RTT",
+    ["max_rrt_description"] = "The maximum Round Trip Time toward the monitor address. If the measured RTT exceeds this value, the gateway is considered down.",
     ["maximum_enforced"] = "Maximum Enforced",
     ["maximum_enforced_descr"] = "If set to maximum enforced, the maximum bandwidth allocation will be enforced regardless of the available bandwidth.",
     ["member_address"] = "Member Address",
@@ -1977,11 +1979,11 @@ local lang = {
     ["static_dhcp_leases"] = "DHCP Server Static Leases",
     ["static_route_address_descr"] = "Specify the destination for the static route.",
     ["static_route_exists"] = "Static route %{sr} already exists.",
+    ["static_route_is_local_descr"] = "Specify whether this is a static route to a local network.",
+    ["static_route_is_local_title"] = "Local Network Static Route",
     ["static_route_name"] = "Static Route Name",
     ["static_route_netmask_descr"] = "Specify the netmask to apply to the destination for the static route.",
     ["static_route_via_descr"] = "Specify the IP address to use as next hop for the static route.",
-    ["static_route_is_local_title"] = "Local Network Static Route",
-    ["static_route_is_local_descr"] = "Specify whether this is a static route to a local network.",
     ["static_route_x"] = "Static route %{sr}",
     ["static_routes"] = "Static Routes",
     ["static_routes_in_policies"] = "Static routes are applied to (and take precedence over) any of the defined <a href=\"%{url}\">Routing Policies</a>.",
diff --git a/scripts/lua/modules/http_lint.lua b/scripts/lua/modules/http_lint.lua
index 2693a6701e..cb39b62225 100644
--- a/scripts/lua/modules/http_lint.lua
+++ b/scripts/lua/modules/http_lint.lua
@@ -1317,6 +1317,7 @@ local special_parameters = {   --[[Suffix validator]]     --[[Value Validator]]
 -- Gateways
    ["gateway_address_"]        = { validateGatewayName, validateIPV4 },
    ["gateway_ping_"]           = { validateGatewayName, validateIPV4 },
+   ["gw_rtt_"]                 = { validateGatewayName, validateNumber },
    ["gw_id_"]                  = { validateNumber, validateGatewayName },
    ["pol_id_"]                 = { validateNumber, validateRoutingPolicyName },
    ["routing_"]                = { validateRoutingPolicyGateway, validateEmptyOr(validateNumber) }, -- a routing policy