[dnsdist] MaxQPSIPRule - IPv6 only

[ales at rygl.net]

Hi,

I would have a question to MaxQPSIPRule. What is the sytntax when  I want to 
limit IPv6 traffic only? Is there a way how to omit the limit per IPv4 
address?
Btw. how does dnsdist count the queries when checking the limits? Is it really 
per each second or have you a "sample interval" of  let's say 10s and then 
divide?

Thanks
Ales