Wait until the router booted

wait_router.py

#!/usr/bin/env python3
from scapy.all import *

# MAC address of our own interface
MYMACADDR = "11:22:33:44:55:66"

def wait_router(iface, ip):
	s = L2Socket(type=ETH_P_ALL, iface=iface)
	arp = Ether(dst="ff:ff:ff:ff:ff:ff", src=MYMACADDR)
	arp = arp/ARP(hwsrc=MYMACADDR, pdst=ip, psrc="192.168.0.100")

	while True:
		# Keep sending ARP requests for the IP of the router
		print("Injecting")
		s.send(arp)

		p = list(sniff(opened_socket=s, count=1, timeout=0.1, \
			       lfilter=lambda p: ARP in p and p.psrc == ip))
		if len(p) > 0:
			break

# Wait until the router has booted
wait_router("enp3s0", "192.168.0.1")