ipv6 subnetting

import ipaddress


def ip_struct(network, dimensions, level=0):
    if not dimensions:
        return
    level += 1
    for subnet in network.subnets(dimensions[0]):
        yield level, subnet
        yield from ip_struct(subnet, dimensions[1:], level)


def printer(gen):
    for level, net in gen:
        print(" " * level * 2 + f"{net!s}")


net = ipaddress.IPv6Network('xxxx:xxxx:xxxx:xxxx::/64')
printer(ip_struct(net, [2,2]))