ungleich-learning-circle/kjg/IPv6/ula/ularegistry/checkip.py

import ipaddress

def overlapip(ip1, ip2):

    test1 = ipaddress.IPv6Network(ip1).overlaps(ipaddress.IPv6Network(ip2))
   
    if test1 :
        print("overlap")
        return 0
    else:
        print("no overlap")
        return 1