DUMRESP(1) PowerDNS Authoritative Server DUMRESP(1)

# [NAME](#NAME)

dumresp - A dumb DNS responder

# [SYNOPSIS](#SYNOPSIS)

**dumresp** *LOCAL-ADDRESS* *LOCAL-PORT* *NUMBER-OF-PROCESSES* \[tcp]

# [DESCRIPTION](#DESCRIPTION)

**dumresp** accepts DNS packets on *LOCAL-ADDRESS*:*LOCAL-PORT* and simply replies with the same query, with the QR bit set. When *NUMBER-OF-PROCESSES* is set to anything but 1, **dumresp** will spawn *NUMBER-OF-PROCESSES* forks and use the SO\_REUSEPORT option to bind to the port.

# [OPTIONS](#OPTIONS)

tcp: Whether to listen and accept TCP connections in addition to UDP packets. Defaults to false.

# [SEE ALSO](#SEE_ALSO)

[socket(7)](/man/enterprise-packages/pdns-5.4/socket.7)

# [AUTHOR](#AUTHOR)

PowerDNS.COM BV

# [COPYRIGHT](#COPYRIGHT)

PowerDNS.COM BV

October 2, 2026

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Document: dumresp(1) from pdns-5.4 5.4.7-r2 (Chainguard OS)
Source: https://github.com/PowerDNS/pdns