def add_eth_ip_udp_headers(dport): eth = Ether(src='0C:C4:7A:A3:25:34', dst='0C:C4:7A:A3:25:35') ip = IP(dst='10.0.0.2', ttl=64) udp = UDP(sport=65231, dport=dport) pkt = eth / ip / udp return pkt