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	This middleware allows playing with responses. Only one type is implemented: it allows you to drop queries. I.e. withhold the response from the client.
		
			
				
	
	
	
		
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erratic
erratic is a middleware useful for testing client behavior. It returns a static response to all queries, but the responses can be delayed by a random amount of time or dropped all together, i.e. no answer at all.
._<transport>.qname. 0 IN SRV 0 0 <port> .
The erratic middleware will respond to every A or AAAA query. For any other type it will return a SERVFAIL response. The reply for A will return 192.0.2.53 (see RFC 5737), for AAAA it returns 2001:DB8::53 (see RFC 3849).
Syntax
erratic {
    drop AMOUNT
}
- AMOUNT drop 1 per AMOUNT of the queries, the default is 2.
Examples
.:53 {
    erratic {
        drop 3
    }
}
Or even shorter if the defaults suits you:
. {
    erratic
}
Bugs
Delaying answers is not implemented.