Hamachi Relayed Tunnel To Direct Tunnel Fix ((new)) May 2026

From Slow to Pro: The Ultimate Guide to Fixing Hamachi Relayed Tunnel to Direct Tunnel

Abandon Hamachi (The Hard Truth)

If you are permanently stuck on Relay, consider switching to ZeroTier or Tailscale. Both handle NAT traversal better and rarely fall back to relayed connections unless absolutely necessary. They are free for small teams.

7) Advanced checks

• Ensure no overlapping subnets: local LAN subnet must not conflict with 25.x.x.x (rare) or with each other.
• On Windows, check binding order: Network Connections → Advanced Settings → ensure Hamachi adapter is enabled and metric not too high.
• Collect logs: Hamachi logs (in app folder) can indicate NAT traversal failures.

What if Nothing Works? (The Harsh Truth)

If you’ve done all five steps and you still see a yellow “Relayed” icon, you are likely behind Carrier-Grade NAT (CGNAT) . This is common with cellular internet (T-Mobile Home Internet, Starlink, or 4G/5G hotspots) and some budget fiber ISPs. hamachi relayed tunnel to direct tunnel fix

With CGNAT, you do not have a public IP address. Port forwarding is impossible. From Slow to Pro: The Ultimate Guide to

Your only options:

1. Call your ISP and ask for a public IPv4 address (they may charge a fee).
2. Switch to a different VPN that handles CGNAT better (ZeroTier or Tailscale are excellent alternatives).
3. Use a cheap VPS as a relay (advanced, but works).

Step 1: Update Hamachi

Ensure that you are running the latest version of Hamachi. You can check for updates in the Hamachi client or download the latest version from the LogMeIn website. 7) Advanced checks

2. Problem Definition

2. Enable Direct Tunneling in Hamachi Settings

• Right-click your Hamachi client in the system tray → Preferences / Options.
• Go to Advanced → Peer Connections.
• Ensure “Allow direct connections” is checked.
• Set “Connection method” to Automatic or Direct (if possible).

5. Limitations & External Factors

In some scenarios, a Direct Tunnel is physically impossible due to infrastructure limitations:

• Carrier-Grade NAT (CGNAT): If your ISP assigns you a private IP address (e.g., starting with 10.x.x.x or 100.64.x.x) rather than a public one, you are behind CGNAT. Port forwarding on your home router will fail because the ISP controls the public IP.
  • Solution: Call the ISP to request a public IP or opt for a business plan.
• Double NAT: If you have a modem connected to a router, which is then connected to another router, port forwarding becomes complex.
  • Solution: Bridge the modem or cascade the routers properly.
• Symmetric NAT: Some strict 4G/5G mobile networks use Symmetric NAT, which prevents P2P hole punching. There is no software fix for this on the client side.

Part 2: The Root Causes – Why you are stuck on Relay

Before clicking random buttons, diagnose the cause. There are three primary reasons Hamachi refuses to establish a direct tunnel.