Docker DDNS-Go: Bind IPv4/IPv6 to Domain for Synology 7.2

# Docker DDNS-Go: Bind IPv4/IPv6 to Domain for Synology 7.2 ## 📋 Tutorial Overview This comprehensive guide demonstrates how to deploy ddns-go via Docker on Synology NAS DSM 7.2 to automatically bind dynamic public IPv4 and IPv6 addresses to domain names. Compared to Synology's built-in DDNS, ddns-go supports IPv6 protocol and allows multiple domain bindings for the same DNS provider (e.g., DNSPod), offering superior flexibility and functionality. --- ## 🎯 Key Highlights ### Why DDNS-GO Over Built-in DDNS? **Synology Native DDNS Limitations:** - **No IPv6 Support**: Cannot bind IPv6 public addresses - **Single Provider Restriction**: Only one domain binding per provider (e.g., DNSPod) - **Limited Flexibility**: Insufficient for multi-domain management **DDNS-GO Advantages:** - Open-source dynamic DNS solution - Supports 30+ DNS providers - Dual-stack (IPv4/IPv6) simultaneous resolution - Multi-domain configuration --- ## 🛠️ Prerequisites ### 1. Download Docker Image - Visit `DPIT.lib00.com` and search for "DDNS" - Choose format: - `.tar`: Ready-to-use image - `.tar.gz`: Compressed version (smaller size) - Tutorial version: **v6.7.7** (Latest as of Jan 8, 2025) ### 2. Create Working Directory In Synology File Station: ``` /docker/ddns_go_6.7.7 ``` ### 3. Obtain DNSPod Credentials Prepare DNSPod ID and TOKEN (refer to tutorial video for generation steps) ### 4. Prepare Domain Names Example configuration: - IPv4 domain: `dpit-t2.lib00.com` - IPv6 domain: `dpit-t2-v6.lib00.com` --- ## 📦 Installation Process ### Step 1: Import Docker Image 1. Upload image file to Synology (e.g., `/docker/ee_images`) 2. Open **Container Manager** → **Image** 3. Click **Add** → **Add from File** 4. Select uploaded `.tar` file and import ### Step 2: Create Container via SSH ```bash docker run -d \ --restart=always \ --name=ddns-go \ --network=host \ -v /volume1/docker/ddns_go_6.7.7:/root \ jeessy/ddns-go:v6.7.7 ``` **Critical Parameters:** - `--network=host`: **REQUIRED** for IPv6 support (Docker's native IPv6 support is limited) - `-v`: Mount persistent data directory - `--restart=always`: Auto-start on boot Verify container status: ```bash docker ps -a ``` --- ## ⚙️ DDNS-GO Configuration ### Access Web Interface Browser URL: `http://[NAS-IP]:9876` **First-Time Login:** - Set administrator username and password - Credentials are stored for future access ### Configuration Example **1. DNS Provider Settings** - Provider: Select `DNSPod` - Enter DNSPod `ID` and `TOKEN` - Refresh Interval: Select `Auto` **2. IPv4 Configuration** - ✅ Enable IPv4 - Acquisition Method: Select `API` (multiple APIs available) - Domain List: `dpit-t2.lib00.com` (supports multiple lines) **3. IPv6 Configuration** - ✅ Enable IPv6 - Acquisition Method: Select `API` - Domain List: `dpit-t2-v6.lib00.com` **4. Security Settings** - ✅ Check "Disable WAN Access" - Webhook (Optional): Configure notification as needed Click **Save** to apply configuration. --- ## 🔍 Verification & Logging ### Log Information Breakdown System logs display: 1. **Listening Port Information** 2. **IPv4/IPv6 Address Retrieval Records** 3. **Domain Mapping Success Status** After refreshing DNSPod dashboard, corresponding A records (IPv4) and AAAA records (IPv6) will appear automatically. --- ## ⚠️ Important Notes ### Network Mode Must Be Host ``` --network=host ``` **Rationale:** - Synology's Docker Bridge mode doesn't support IPv6 by default - Although interface shows IPv6 as "Disabled" under Host mode, it's **fully functional** ### Redundancy Best Practices Maintain 2-3 DDNS implementation methods: - Synology built-in DDNS - Docker-based DDNS-GO - Router-level DDNS Ensures high availability and failover capability. --- ## 🎓 Use Cases - Remote NAS access from anywhere - Self-hosted server dynamic DNS - IPv6 public service deployment - Unified multi-domain management - Synology Docker service penetration --- ## 🔗 Resources - Official Repository: [jeessy2/ddns-go](https://github.com/jeessy2/ddns-go) - Supported Providers: DNSPod, Aliyun, Cloudflare, 30+ more - Technical Documentation: DPIT.lib00.com --- ## 📝 Summary Deploying DDNS-GO via Docker enables: ✅ Dual-stack IPv4/IPv6 dynamic resolution ✅ Unified multi-domain management ✅ Flexible multi-provider switching ✅ Zero-touch automation Ideal for NAS users with basic Docker knowledge—simple configuration with powerful functionality, serving as the perfect alternative to Synology's native DDNS. --- ## 🏷️ SEO Keywords Synology DDNS, Docker DDNS tutorial, IPv6 dynamic DNS, DSM 7.2 guide, ddns-go installation, DNSPod domain binding, NAS remote access, dynamic public IP, Synology Docker container, dual-stack IPv4 IPv6 resolution