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+---
+outline: deep
+---
+
+## Attach free IPV6 address segments to host machines
+
+Some machines do not have an IPV6 /64 subnet, so here is a way to attach an IPV6 subnet for free.
+
+Combined with the previous script that opens containers with IPV6 addresses, you can attach an IPV6 address to each container.
+
+The disadvantage is that the address is rather dirty, cloudflare cdn may not be able to set up, self-testing
+
+0. Initial environment modification
+
+Execute:
+
+```
+touch /etc/cloud/cloud-init.disabled
+```
+
+Turn off the automated overwrite of cloud-init first, and then check what the machine uses to manage the network by running
+
+```
+systemctl is-active systemd-networkd
+```
+
+and
+
+```
+systemctl is-active networking
+```
+
+See which case it belongs to, if it's active in the former and inactive in the latter, you need to reinstall/DD a system that's not configured this way, or switch the local machine to use ifupdown to manage network execution
+
+```
+# Judge for yourself if you need to disable the original network management.
+# sudo systemctl stop systemd-networkd
+# sudo systemctl disable systemd-networkd
+# sudo systemctl stop systemd-networkd.socket
+# sudo systemctl disable systemd-networkd.socket
+
+sudo apt-get install ifupdown
+sudo systemctl start networking
+sudo systemctl enable networking
+```
+
+Then reboot the server, check whether the machine's network will be rebooted due to the modification of the situation, and execute ```uptime`` to observe that the startup has been more than 1 minute before proceeding to the next step.
+
+If it is inactive and active, there is no need to switch the network management program and you can proceed directly to the next step.
+
+1. Register for an account at [https://tunnelbroker.net/](https://tunnelbroker.net/) and click ``Create Regular Tunnel`` on the left.
+
+![1](https://github.com/oneclickvirt/oneclickvirt.github.io/assets/103393591/35923be5-821f-45c8-8401-962ea3f97726)
+
+2. Fill in the red box with the IPV4 address of your server, choose a connection point that is close to the physical distance, for example, if the machine is in Los Angeles, choose a connection point on the west coast of the U.S., and then display the green box prompts, point ``Create Tunnel`` to create it!
+
+![2](https://github.com/oneclickvirt/oneclickvirt.github.io/assets/103393591/cab04113-4d6a-4d6f-9952-d3851057fc4a)
+
+![3](https://github.com/oneclickvirt/oneclickvirt.github.io/assets/103393591/518dc62a-c8d0-48e3-bb13-befc39348990)
+
+![4](https://github.com/oneclickvirt/oneclickvirt.github.io/assets/103393591/6188de3f-e83c-400e-9594-dd3f73aaf46a)
+
+3. Wait for the following screen, click ``Example Configurations`` and select the corresponding system, for example, the host of LXD is definitely Debian/Ubuntu.
+
+![5](https://github.com/oneclickvirt/oneclickvirt.github.io/assets/103393591/9f0045fc-b1ac-4954-9ecd-1fba47d07d8a)
+
+![6](https://github.com/oneclickvirt/oneclickvirt.github.io/assets/103393591/2fb7c951-371c-452c-b775-78f69b980a2c)
+
+4. The boxed part is the document to be modified and the content to be filled in.
+
+![7](https://github.com/oneclickvirt/oneclickvirt.github.io/assets/103393591/c0156902-b4c0-4001-823e-50f611215393)
+
+5. Execute the following commands to append IPV6 settings to your network configuration file (or modify the ``/etc/network/interfaces`` file yourself with vim or vi commands to add them).
+
+```
+sudo tee -a /etc/network/interfaces <<EOF
+# Here, copy and paste the contents of the configuration file in the red box before, and then execute this command
+EOF
+```
+
+You can then use ``cat /etc/network/interfaces`` to see if the configuration file has been written properly
+
+6. If all of the above is okay, then you need to enable the network interface
+
+```
+apt-get install net-tools iproute2 -y
+systemctl restart networking
+```
+
+7. You can then test that the IPV6 network is attached.
+
+Execute the ```ifconfig``` command, at which point there should be a he-ipv6 interface, similar to the following:
+
+![8](https://github.com/oneclickvirt/oneclickvirt.github.io/assets/103393591/1760af85-2b60-4352-ad8c-3c69e49fc1e4)
+
+Or execute:
+
+```
+curl ipv6.ip.sb
+```
+
+Return the IPV6 address you are bound to.
+
+8. Additional settings for NAT VPS
+
+IPv4 NAT VPS may require some additional settings beyond the IP replacement operation mentioned earlier, otherwise it may still not be able to access the IPv6 network.
+
+```
+apt-get install ufw -y
+ufw allow 41
+```
+
+Add relevant routing rules
+
+```
+route -A inet6 add ::/0 dev he-ipv6
+```
+
+9. If you don't need the IPV6 network anymore and want to delete it, delete the he-ipv6 network interface configuration.
+
+Delete the he-ipv6 network interface configuration (if not deleted it will be enabled automatically after reboot), remember to modify the ``/etc/network/interfaces`` file and delete the content added in the red box before.
+
+Then reboot the server to remove the
+
+
+
+
+
+
+
+