Fixing the "Relayed to Direct tunnel" issue in Hamachi is a game of elimination. Start with the IPv6 disable (fixes 60% of cases). Move to the Firewall UDP port (fixes 30%). Use the Registry force and UPnP for the remaining 10%.
If you still see "Relayed" after two hours of troubleshooting, accept that your ISP or router hardware is incompatible with Hamachi’s hole-punching algorithm. At that point, either use the VPN-over-VPN bridge or migrate to a modern mesh VPN like Tailscale.
Remember: A Direct tunnel isn't just a luxury—it's the difference between a usable remote connection and a frustrating digital traffic jam.
A relayed tunnel (indicated by a blue dot) occurs when Hamachi cannot establish a direct connection between peers, usually due to firewall or router restrictions. This often leads to higher latency and slower speeds compared to a direct tunnel (green dot). 1. Configure Windows Firewall Exceptions hamachi relayed tunnel to direct tunnel fix
Firewalls often block the necessary ports for a direct connection.
Open the Control Panel and navigate to System and Security > Windows Firewall. Select Allow an app or feature through Windows Firewall.
The following steps should be performed sequentially. It is recommended to perform these steps on both ends of the connection if possible, though fixing one side is often sufficient. Fixing the "Relayed to Direct tunnel" issue in
Hamachi’s IPv6 relay detection is buggy on many networks. Forcing IPv4 often solves the problem.
On Windows:
On macOS/Linux: Disable IPv6 system-wide temporarily for testing (sysctl -w net.ipv6.conf.all.disable_ipv6=1). The following steps should be performed sequentially
Forward UDP 12975 to your PC’s LAN IP address.
Note: This only helps if you are the network host. In most peer-to-peer Hamachi networks, it’s not strictly needed unless both sides are behind strict NAT.
Hamachi falls back to a relayed tunnel when a direct connection fails. Common causes:
If manual port forwarding sounds scary, enable UPnP. It allows Hamachi to automatically request open ports.
Warning: UPnP has security risks. Disable it again after gaming/sessions if you’re paranoid.