diff --git a/doc/man-sections/script-options.rst b/doc/man-sections/script-options.rst
index bd5ecd4..670cd33 100644
--- a/doc/man-sections/script-options.rst
+++ b/doc/man-sections/script-options.rst
@@ -874,6 +874,14 @@
     translations will be recorded rather than their names as denoted on the
     command line or configuration file.
 
+:code:`route_redirect_gateway_ipv4`
+
+:code:`route_redirect_gateway_ipv6`
+    Set to `1` if the corresponding default gateway should be redirected
+    into the tunnel, and to `2` if also the local LAN segment should be
+    blocked (`block-local`).  Not set otherwise.  Set prior to **--up** script
+    execution.
+
 :code:`script_context`
     Set to "init" or "restart" prior to up/down script execution. For more
     information, see documentation for ``--up``.
diff --git a/src/openvpn/options.c b/src/openvpn/options.c
index 0b16c5a..648d526 100644
--- a/src/openvpn/options.c
+++ b/src/openvpn/options.c
@@ -5720,6 +5720,8 @@
         {
             options->routes_ipv6->flags = 0;
         }
+        env_set_del(es, "route_redirect_gateway_ipv4");
+        env_set_del(es, "route_redirect_gateway_ipv6");
     }
     else if (streq(p[0], "dns") && !p[1])
     {
@@ -6039,6 +6041,8 @@
             {
                 options->routes_ipv6->flags = 0;
             }
+            env_set_del(es, "route_redirect_gateway_ipv4");
+            env_set_del(es, "route_redirect_gateway_ipv6");
             *update_options_found |= OPT_P_U_REDIR_GATEWAY;
         }
     }
@@ -7661,6 +7665,16 @@
                 goto err;
             }
         }
+        if (options->routes->flags & RG_REROUTE_GW)
+        {
+            setenv_int(es, "route_redirect_gateway_ipv4",
+                       options->routes->flags & RG_BLOCK_LOCAL ? 2 : 1);
+        }
+        if (options->routes_ipv6 && (options->routes_ipv6->flags & RG_REROUTE_GW))
+        {
+            setenv_int(es, "route_redirect_gateway_ipv6",
+                       options->routes->flags & RG_BLOCK_LOCAL ? 2 : 1);
+        }
 #ifdef _WIN32
         /* we need this here to handle pushed --redirect-gateway */
         remap_redirect_gateway_flags(options);