import socket
def start_server():
    host = '127.0.0.1'  # Localhost
    port = 12345        # Arbitrary non-privileged port
# Creating a socket object
    server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
# Bind the socket to a public host, and a well-known port
    server_socket.bind((host, port))
# Enable the server to accept connections
    server_socket.listen(5)
print(f"Server is listening on host:port")
while True:
        # Wait for a connection
        client_socket, addr = server_socket.accept()
        print(f"Got a connection from addr")
# Receive data from the client
        data = client_socket.recv(1024)
        print(f"Received: data.decode()")
# Log the IP address
        with open("ip_log.txt", "a") as log_file:
            log_file.write(f"addr[0]\n")
client_socket.close()
if __name__ == "__main__":
    start_server()

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If the goal is to demonstrate how easily IP addresses can be spoofed or to educate on network security, consider using tools and scripts that simulate IP spoofing in a controlled environment.