Function matching_bits

scapy/utils6.py:887–893

(byte1, byte2)

    Return common prefix length of IPv6 addresses a and b.
    """
    def matching_bits(byte1, byte2):
        # type: (int, int) -> int
        for i in range(8):
            cur_mask = 0x80 >> i
            if (byte1 & cur_mask) != (byte2 & cur_mask):
                return i
        return 8

    tmpA = inet_pton(socket.AF_INET6, a)
    tmpB = inet_pton(socket.AF_INET6, b)