Usage: dnsscrape [--53] [-p] [-q] [-i iface | -f file.pcap] [-c | --config filename]
-i: use specified interface for capture.
-f: run using saved pcap file. If -f is given, -i is ignored.
-n: show section counts (also --counts)
-q: quiet
-c filename, --config filename: specify config file
--53: only parse packets on port 53

Currently supports UDP only, packets less than 512 bytes, unfragmented packets