In your IPv6 application, you need to dig out the IPv6 address for getting the prefix information. Note that the upper 64-bits of an IPv6 address are represented from a global routing prefix plus a subnet ID, as defined in RFC 3513. A general prefix (for example, /48) holds a short prefix based on which a number of longer, more specific prefixes (for example, /64) can be defined. A Python script can be very helpful in generating the prefix information.
Extracting an IPv6 prefix from an IPv6 address
How to do it...
We can use the netifaces and netaddr third-party libraries to find out the IPv6 prefix information for a given IPv6 address.
Make sure to have netifaces and netaddr installed in your system:
$ pip install netaddr...