1DNSREPLAY(1)                   PowerDNS Recursor                  DNSREPLAY(1)
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NAME

6       dnsreplay -
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8       dnsreplay - A PowerDNS nameserver debugging tool
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SYNOPSIS

11       dnsreplay [OPTION]... FILENAME ADDRESS [PORT]
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DESCRIPTION

14       This  program  takes recorded questions and answers and replays them to
15       the specified nameserver and reporting afterwards which  percentage  of
16       answers matched, were worse or better.
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18       dnsreplay  compares  the answers and some other metrics with the actual
19       ones with those found in the dumpfile.
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21       By default it only replay queries with recursion-desired flag set.
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OPTIONS

24       FILENAME
25              is expected to be an PCAP file. The queries are send to the  DNS
26              server specified as ADDRESS and PORT.
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28       ADDRESS
29              IPv4 or IPv6 address of the nameserver to replay FILENAME to.
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31       PORT   if omitted, 53 will be used.
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33       --help, -h
34              Show summary of options.
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36       --ecs-mask <VAL>
37              When  EDNS  forwarding  an IP address, mask out first octet with
38              this value
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40       --ecs-stamp <FLAG>
41              Add original IP address as EDNS Client Subnet Option  when  for‐
42              warding to reference server
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44       --packet-limit <NUM>
45              Stop  after  replaying  NUM packets. Default for NUM is 0, which
46              means no limit.
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48       --quiet <FLAG>
49              If FLAG is set to 1. dnsreplay will not be very noisy  with  its
50              output. This is the default.
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52       --recursive <FLAG>
53              If  FLAG  is  set  to 1. dnsreplay will only replay queries with
54              recursion desired flag set. This is the default.
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56       --speedup <FACTOR>
57              Replay queries with this speedup FACTOR. Default is 1.
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59       --timeout-msec <MSEC>
60              Wait at least MSEC milliseconds for a reply. Default is 500.
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BUGS

63       dnsreplay has no certain handling for timeouts. It  handles  around  at
64       most 65536 outstanding answers.
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SEE ALSO

67       pcap(3PCAP), tcpdump(8), dnswasher(1)
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AUTHOR

70       PowerDNS.COM BV
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73       2001-2018, PowerDNS.COM BV
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784.1                              Mar 22, 2019                     DNSREPLAY(1)
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