I’m working on a project where I am a hacker and I need to make a Man in the middle attack.
I have a python code for getting MAC addresse for an IP and send request through a VLAN :

from scapy.all import *

# Variables
ip_target = '192.168.20.60'  # Target IP
interface = 'eth0'  # Target interface
vlan_id = 20  # Target VLAN

def send_arp_request_vlan(ip, iface, vlan):
    # ARP request with 802.1Q
    arp_request = ARP(pdst=ip)
    broadcast = Ether(dst='ff:ff:ff:ff:ff:ff') / Dot1Q(vlan=vlan)
    arp_request_broadcast = broadcast / arp_request

    # Send request and receive responses
    answered_list = srp(arp_request_broadcast, timeout=5, iface=iface, verbose=False)[0]


    if answered_list:
        return True  # If response
    else:
        return False  # If no response



def get_mac_address_vlan(ip, iface, vlan):
    # ARP request with 802.1Q
    arp_request = ARP(pdst=ip)
    broadcast = Ether(dst='ff:ff:ff:ff:ff:ff') / Dot1Q(vlan=vlan_id)
    arp_request_broadcast = broadcast / arp_request

    # Send request and receive responses
    answered_list = srp(arp_request_broadcast, timeout=5, iface=iface, verbose=False)[0]

    if answered_list:
        return answered_list[0][1].hwsrc
    else:
        return None

# Send ARP request and check for response
response_received = send_arp_request_vlan(ip_target, interface, vlan_id)

# Get MAC addr
mac_address = get_mac_address_vlan(ip_target, interface, vlan_id)

if response_received and mac_address:
    print(f'Received response from {ip_target} in VLAN {vlan_id}')
    print(f'IP: {ip_target}')
    print(f'MAC: {mac_address}')
    print(f'VLAN: {vlan_id}')
else:
    print(f'No response from {ip_target} in VLAN {vlan_id}')

I’m looking for how I could code a Gratuitous ARP request