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+Creating an ASCII art diagram for your VXLAN example with three sites can help visualize the network setup in a simple and effective way. Here's an ASCII representation that outlines the multi-site deployment, including OPNsense gateways, Debian devices configured with VXLAN, and connections managed through dynamic DNS.
+
+```
+ +----------------+       +----------------+       +----------------+
+ |                |       |                |       |                |
+ |   Site A       |       |   Site B       |       |   Site C       |
+ |                |       |                |       |                |
+ | OPNsense A     |       | OPNsense B     |       | OPNsense C     |
+ | 192.168.10.1   |       | 192.168.20.1   |       | 192.168.30.1   |
+ +-------+--------+       +-------+--------+       +-------+--------+
+         |                        |                        |
+         |                        |                        |
+         |                        |                        |
+         v                        v                        v
+ +-------+--------+       +-------+--------+       +-------+--------+
+ |                |       |                |       |                |
+ | Debian A       |       | Debian B       |       | Debian C       |
+ | 10.0.0.1       |<----->| 10.0.0.2       |<----->| 10.0.0.3       |
+ | VXLAN ID 100   |       | VXLAN ID 100   |       | VXLAN ID 100   |
+ +----------------+       +----------------+       +----------------+
+```
+
+### Explanation of the ASCII Diagram:
+- **OPNsense Gateways**: Each site has an OPNsense gateway configured with an internal IP address.
+- **Arrows**: The arrows (`<----->`) represent the VXLAN tunnels between Debian devices. These arrows indicate bidirectional traffic flow, essential for illustrating that each site can communicate with the others via the VXLAN overlay.
+- **Debian Devices**: These are set up with VXLAN. Each device is assigned a unique local IP but shares a common VXLAN ID, which is crucial for establishing the VXLAN network across all sites.
+- **IP Addresses**: Simplified IP addresses are shown for clarity. In a real-world scenario, these would need to be public IPs or routed properly through NAT configurations.
+
+This ASCII diagram provides a clear, simple view of how each component is interconnected in your VXLAN setup, suitable for inclusion in Markdown documentation, presentations, or network planning documents. It’s a useful tool for both explaining and planning network configurations.
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