rpz depending on query type

Erich Eckner bind at eckner.net
Tue Jan 5 16:33:06 UTC 2021


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Hi,

I'm running bind as a recursive dns server. I wonder, if it's possible to 
modify responses via rpz for some query type only - e.g.: I want to return 
NODATA for "example.com AAAA", but the real answer for "example.com A" 
(and all other record types). Currently, I do this, by adding a rpz rule 
"example.com A 1.2.3.4". But obviously, I'm relying on

a) example.com's address not changing and
b) me knowing every possible record type, that might be queried for 
example.com

btw: I do *not* want to disable AAAA responses.

The only way, I can currently think of, is to redirect all queries for 
example.com via CNAME to a custom server (or just a view), that has AAAA 
disabled.

regards,
Erich

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