diff --git a/src/os.c b/src/os.c
index fda9d81..d10d045 100644
--- a/src/os.c
+++ b/src/os.c
@@ -441,7 +441,15 @@ int shell_cmd(const char *substs[][2], const char *args_str, int silent)
 Cmds firewall_rules_cmds(int is_server)
 {
     if (is_server) {
-#ifdef __linux__
+#ifdef defined(OPENWRT_BUILD)
+        static const char
+            *set_cmds[] =
+                { "ip addr add $LOCAL_TUN_IP peer $REMOTE_TUN_IP dev $IF_NAME",
+                  "ip -6 addr add $LOCAL_TUN_IP6 peer $REMOTE_TUN_IP6/96 dev $IF_NAME",
+                  "ip link set dev $IF_NAME up",
+                  NULL },
+            *unset_cmds[] = { NULL, NULL };
+#elif __linux__
         static const char
             *set_cmds[] =
                 { "sysctl net.ipv4.ip_forward=1",
@@ -487,6 +495,13 @@ Cmds firewall_rules_cmds(int is_server)
                               "route delete 128/1",           "route delete -inet6 0000::/1",
                               "route delete -inet6 8000::/1", NULL
                           };
+#elif defined(OPENWRT_BUILD)
+        static const char
+            *set_cmds[]   = { "ip link set dev $IF_NAME up",
+                            "ip addr add $LOCAL_TUN_IP peer $REMOTE_TUN_IP dev $IF_NAME",
+                            "ip -6 addr add $LOCAL_TUN_IP6 peer $REMOTE_TUN_IP6/96 dev $IF_NAME",
+                            NULL },
+            *unset_cmds[] = { NULL, NULL };
 #elif defined(__linux__)
         static const char
             *set_cmds[]   = { "sysctl net.ipv4.tcp_congestion_control=bbr",