[Pdns-users] LUA records when behind the recursor
b.candler at pobox.com
Sat Sep 29 12:48:16 UTC 2018
On 29/09/2018 13:42, Brian Candler wrote:
> Note that the default resolution is /24, i.e. you only get the top 24
> bits of the client IP address, but if you need more specific
> information you can change this setting (ecs-ipv4-bits)
But beware that setting it too fine will have a big negative impact on
your DNS cache - since it'll have to make and store separate recursive
queries for clients within each range.
Also, make sure edns-subnet-whitelist contains only your own domains or
authoritative server IPs, so that general web browsing does not make
separate queries for each client subnet.
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