You likely want DNS running on your Darknet server. In our example we will use the management servers 192.168.1.9 and 192.168.2.9 as our DNS name servers (they also serve NTP). Be careful with DNS and sniffing! Be sure to use the -n flag with tcpdump so that your Darknet server doesn't attempt to resolve each IP in your sniffer output. Our /etc/resolv.conf file should now include: