import re
import random

def generate_random_mac():
    # Generate a random MAC address
    return ':'.join(f"{random.randint(0, 255):02x}" for _ in range(6))

def replace_macs_in_file(file_path):
    with open(file_path, 'r') as file:
        content = file.read()

    # Regular expression to match MAC addresses
    mac_pattern = r'\b(?:[0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}\b'
    
    # Replace MACs with random MACs
    modified_content = re.sub(mac_pattern, lambda _: generate_random_mac(), content)

    with open(file_path, 'w') as file:
        file.write(modified_content)

if __name__ == "__main__":
    file_path = 'dhcpcopy.log'  # Change to your file path
    replace_macs_in_file(file_path)
    print("MAC addresses replaced successfully.")