fix(config): Update dns config interface within DcRouter

ts/classes.dcrouter.ts

@@ -53,12 +53,26 @@ export interface IDcRouterOptions {
     caPath?: string;
   };
   
-  /** DNS server configuration */
+  /** 
-  dnsServerConfig?: plugins.smartdns.dnsServerMod.IDnsServerOptions;
+   * DNS domain for automatic DNS server setup with DoH
-  
+   * When set, DNS server will:
-  /** DNS domain for automatic DNS server setup with DoH */
+   * - Always bind to UDP port 53 on the VM's IP address
+   * - Use socket-handler approach for DNS-over-HTTPS
+   * - Automatically handle NS delegation validation
+   */
   dnsDomain?: string;
   
+  /**
+   * DNS records to register when using dnsDomain
+   * These are in addition to auto-generated records from email domains with internal-dns mode
+   */
+  dnsRecords?: Array<{
+    name: string;
+    type: 'A' | 'AAAA' | 'CNAME' | 'MX' | 'TXT' | 'NS' | 'SOA';
+    value: string;
+    ttl?: number;
+  }>;
+  
   /** DNS challenge configuration for ACME (optional) */
   dnsChallenge?: {
     /** Cloudflare API key for DNS challenges */
@@ -128,18 +142,6 @@ export class DcRouter {
       // Set up DNS server if configured by dnsDomain
       if (this.options.dnsDomain) {
         await this.setupDnsWithSocketHandler();
-      } else if (this.options.dnsServerConfig) {
-        // Legacy DNS server setup
-        const { records, ...dnsServerOptions } = this.options.dnsServerConfig as any;
-        this.dnsServer = new plugins.smartdns.dnsServerMod.DnsServer(dnsServerOptions);
-        
-        // Register DNS record handlers if records provided
-        if (records && records.length > 0) {
-          this.registerDnsRecords(records);
-        }
-        
-        await this.dnsServer.start();
-        console.log(`DNS server started on UDP port ${dnsServerOptions.udpPort || 53}`);
       }
       
       console.log('DcRouter started successfully');
@@ -768,6 +770,12 @@ export class DcRouter {
     // Start the DNS server (UDP only)
     await this.dnsServer.start();
     logger.log('info', `DNS server started on UDP ${vmIpAddress}:53`);
+    
+    // Register DNS records if provided
+    if (this.options.dnsRecords && this.options.dnsRecords.length > 0) {
+      this.registerDnsRecords(this.options.dnsRecords);
+      logger.log('info', `Registered ${this.options.dnsRecords.length} DNS records`);
+    }
   }
   
   /**