Hamachi Relayed Tunnel To Direct Tunnel Fix

| Action | Your PC | Friend's PC | |--------|---------|--------------| | Hamachi version same? | ✅ | ✅ | | Allow direct traffic ON | ✅ | ✅ | | IPv6 disabled on Hamachi adapter | ✅ | ✅ | | Firewall allows UDP 12975 in/out | ✅ | ✅ | | Network profile = Private | ✅ | ✅ | | No VPN interfering (e.g., NordVPN, OpenVPN) | ✅ | ✅ | | Restarted Hamachi after changes | ✅ | ✅ |

IPv6 can interfere with direct tunneling: hamachi relayed tunnel to direct tunnel fix

Hamachi falls back to relayed when it cannot establish a direct UDP hole punch (due to strict NATs, firewalls, or network configuration). | Action | Your PC | Friend's PC