The IP address mentioned, 2001::1/64, appears to be a valid IPv6 address.

However, the configurability of this specific address in a real network environment depends on whether you own or are assigned that specific block of IPv6 addresses.

Here are some key aspects to consider:

1. Address Block Property

The direction 2001::/16 It is part of the range assigned by the IANA (Internet Assigned Numbers Authority) for specific uses, mainly for traffic passing through the 6to4 Tunnels. To legally use any address within this range, it must be assigned by a local registrar or service provider that is authorized to distribute addresses within that block.

2. Configuration on your Network

If you have a valid assignment of that address block or are using this address in a closed lab environment (not connected to the Internet), you can configure the address 2001::1/64 on your devices. To configure this address on a device, you would need to access the device's network settings and specify the IPv6 address and appropriate subnet mask. For example, in a network environment like MikroTik, the configuration would be something like this:

[admin@MikroTik] > ipv6 address add address=2001::1/64 interface=ether1

3. Routing Considerations

Configuring this address in a production environment requires ensuring that your network can correctly handle and route IPv6 traffic. This includes having appropriate routes that can handle traffic to and from this address, as well as security configurations to protect devices that use IPv6.

4. Legal and Compliance Matters

If you are considering using IPv6 on a network that is connected to the Internet, it is crucial that you only use addresses that have been officially assigned to you to avoid routing conflicts and legal problems.

Using addresses that have not been assigned to you can result in misdirected traffic and connectivity problems, as well as potential legal action by Internet numbering authorities.

Conclusion

In short, yes you can configure 2001::1/64 on devices within your own network if you have rights to that address block or if you are working in a test environment.

For use on Internet-connected networks, make sure you are using IPv6 addresses that have been officially assigned to you.