dnsscope - A PowerDNS nameserver debugging tool

       PowerDNS.COM BV

       PowerDNS.COM BV

                                                  Feb 06, 2025                                       DNSSCOPE(1)

dnsscope takes an INFILE in PCAP format. It generates some simple statistics outputs these to STDOUT.

       dnsscope - A PowerDNS nameserver debugging tool

INFILE Path to a PCAP file.

       -h, --help
              Show the help.

       --rd   Only  process  packets  in INFILE with the RD (Recursion Desired) flag set. By default, we process
              all DNS packets in INFILE.

       --ipv4=<state>
              Process IPv4 packets. On by default, disable with --ipv4false.

       --ipv6=<state>
              Process IPv6 packets. On by default, disable with --ipv6false.

       -f,--filter-name=<domain>
              Only process packets within this domain

       --full-histogram<msec>
              Write out histogram with specified bin-size to 'full-histogram'

       --log-histogram
              Write out a log-histogram of response times to 'log-histogram'

       --no-servfail-stats
              Remove servfail responses from latency statistics

       --port The source and destination port to consider. Default is looking at packets from and  to  ports  53
              and 5300.

       --servfail-tree
              Figure out subtrees that generate servfails.

       --stats-dir<directory>
              Drop statistics files in this directory. Defaults to ./

       -l, --load-stats
              Emit per-second load statistics (questions, answers, outstanding).

       -w<file>, --write-failures<file>
              Write weird packets to a PCAP file at FILENAME.

       -v, --verbose
              Be more verbose.

pcap(3PCAP), tcpdump(8)

dnsscope [OPTION]... INFILE