I want to use the Python module scapy to perform an equivalent command of dig ANY google.com @8.8.4.4 +notcp I've made a simple example code: from scapy.all import * a = sr(IP(dst="8.8.4.4")/UDP(sport=RandShort(),dport=53)/DNS(qd=DNSQR(qname="google.com",qtype="ALL",qclass="IN"))) print str(a[0]) And it sends and receives a packet, but when I sniffed the packet the response says Server failure. Wireshark Screenshot - scapy Wireshark Screenshot - dig Sniffing the dig command itself, looks nearly the same but it gives me a correct response and also it does not send another ICMP - Destination unreachable Packet.. this only comes up when sending it with scapy. If you need more information, feel free to ask. Maybe someone can help me with this.. EDIT: Maybe the ICMP - Destination unreachable packet were send because 8.8.4.4 tries to send the response to my sport, which is closed? But why should dig then work?! Continue reading...
