docs/docs/registration/entitydb.md

Prefix allocation and registration

To simply forward IPv6 traffic on CRXN one only needs an IPv6 link-local address which is always guaranteed to be assigned (most of the time), however normally people join CRXN so that they can also host services (and access others) on the inter-network. Therefore, one needs to allocate a prefix and register it to be able to make use of the network in such a manner.

Generating a prefix (allocation)

On CRXN we use addresses within the fd00::/8 space otherwise known as the ULA-space. We then require users to generate a random ULA which is a subnet within this space with a prefix size of /48.

Here is what a ULA would look like: fd2d:194b:a02f::/48

You can generate your ULA you would like to use for CRXN using a tool such as Unique Local IPv6 Generator or if you are good at basic programming and mathematics you could write a C program to do it.