These utilities are going to be needed elsewhere in the daemon to handle
netip values from API requests.
Signed-off-by: Cory Snider <csnider@mirantis.com>
Add methods to count the number of addresses in the set which have a
particular prefix. The returned counts are 128 bits wide to accommodate
sets containing more than 2**64 addresses.
Signed-off-by: Cory Snider <csnider@mirantis.com>
