net/wireguard: use syncconf on newwanip event

net/wireguard/src/etc/inc/plugins.inc.d/wireguard.inc

@@ -144,7 +144,7 @@ function wireguard_prepare($device)
 function wireguard_configure()
 {
     return [
-        'newwanip' => ['wireguard_renew:2'],
+        'newwanip' => ['wireguard_sync:2'],
         'vpn' => ['wireguard_configure_do:2'],
     ];
 }
@@ -162,15 +162,33 @@ function wireguard_configure_do($verbose = false, $unused = '')
     service_log("done.\n", $verbose);
 }
 
-function wireguard_renew($verbose = false, $unused = '')
+function wireguard_sync($verbose = false, $unused = '')
 {
     if (!wireguard_enabled()) {
         return;
     }
 
-    service_log('Renewing WireGuard VPN...', $verbose);
+    $instances = [];
+    foreach ((new OPNsense\Wireguard\Server())->servers->server->iterateItems() as $node) {
+        if (!empty((string)$node->enabled)) {
+            $instances[(string)$node->interface] = (string)$node->cnfFilename;
+        }
+    }
 
-    configd_run('wireguard renew');
+    if (!count($instances)) {
+        return;
+    }
+
+    service_log('Synchronizing WireGuard VPN...', $verbose);
+
+    openlog('wireguard', LOG_ODELAY, LOG_AUTH);
+
+    foreach ($instances as $device => $config) {
+        mwexecf('/usr/bin/wg syncconf %s %s', [$device, $config]);
+    }
+
+    closelog();
+    reopenlog();
 
     service_log("done.\n", $verbose);
 }