Converts a mac address to the corresponding EUI 64 IPv6.

mac2ipv6.py

from netaddr import *

def mac2ipv6( mac, prefix ):
        mac = EUI(mac).eui64()

        bits = list(str(mac.bits()))
        bits[6] = "1"
        bits = "".join(bits)

        bytes = bits.split("-");
        bytes = [''.join([bytes[0], bytes[1]]), ''.join([bytes[2], bytes[3]]), ''.join([bytes[4], bytes[5]]), ''.join([bytes[6], bytes[7]]) ]

        ipv6 = [prefix];
        for byte in bytes:
                ipv6.append(hex(int(byte, 2))[2:6])

        return ":".join(ipv6)

prefix = "2001:4001:dead:beef"
mac = "da:a0:b1:c2:d3:e4"

print(mac2ipv6(mac, prefix))