NAME

erratic - a plugin useful for testing client behavior.

DESCRIPTION

erratic returns a static response to all queries, but the responses can be delayed, dropped or truncated. The erratic plugin will respond to every A or AAAA query. For any other type it will return a SERVFAIL response (except AXFR). The reply for A will return 192.0.2.53 (RFC 5737 ⟨https://tools.ietf.org/html/rfc5737⟩), for AAAA it returns 2001:DB8::53 (RFC 3849 ⟨https://tools.ietf.org/html/rfc3849⟩). For an AXFR request it will respond with a small zone transfer.

SYNTAX

erratic {


    drop [AMOUNT]


    truncate [AMOUNT]


    delay [AMOUNT [DURATION]]
}

• drop: drop 1 per AMOUNT of queries, the default is 2.
• truncate: truncate 1 per AMOUNT of queries, the default is 2.
• delay: delay 1 per AMOUNT of queries for DURATION, the default for AMOUNT is 2 and the default for DURATION is 100ms.

In case of a zone transfer and truncate the final SOA record isn't added to the response.

READY

This plugin reports readiness to the ready plugin.

EXAMPLES

example.org {


    erratic {


        drop 3


    }
}

Or even shorter if the defaults suit you. Note this only drops queries, it does not delay them.

example.org {


    erratic
}

Delay 1 in 3 queries for 50ms

example.org {


    erratic {


        delay 3 50ms


    }
}

Delay 1 in 3 and truncate 1 in 5.

example.org {


    erratic {


        delay 3 5ms


        truncate 5


    }
}

Drop every second query.

example.org {


    erratic {


        drop 2


        truncate 2


    }
}

SEE ALSO

RFC 3849 ⟨https://tools.ietf.org/html/rfc3849⟩ and RFC 5737 ⟨https://tools.ietf.org/html/rfc5737⟩.