plugin/loadbalance: add limit_answers option #6511
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1. Why is this pull request needed and what does it do?
This PR proposes an addition to the
loadbalance
plugin enabling it to limit the number of RRs in the Answers section of a DNS response after it has been shuffled / weighted by the plugin.2. Which issues (if any) are related?
A similar capability is discussed in #6337 with the proposed
oneaddr
plugin. I commented there about the possibility of expanding that capability from 1 to N. This is the first step in that direction.3. Which documentation changes (if any) need to be made?
Changes to the README.md (as outlined in this first commit) for the
loadbalance
plugin, also probably plugin docs on coredns.io.4. Does this introduce a backward incompatible change or deprecation?
No.
Assuming the syntax / format of this addition are approved, I plan to push additional commits to this PR to implement this proposed change.