vavrusa

local slowdrip = {
  tracked = {},
  blocked = {},
  window = 60,     -- Length of the tracking window
  threshold = 100, -- Number of NXDOMAINs before blocking
  -- Track suffixes of names leading to NXDOMAIN
  layer = {
    finish = function(state, req, answer)
      local parent = answer:qname()
      parent = parent:sub(parent:find('.',0,true), -1)

vavrusa

Near-stretch ideas
------------------

* I *quite* like how it's built, but it's too much *PowerDNS*-y, hacking on it is a pain (if you work on cheap virtuals like me) because of long build times and dependencies (I know, but try it yourself on the budget DigitalOcean droplet...), I'd say lose the legacy and make it really a standalone thing.
* The configuration is sometimes confusing, like if I set it up to listen on local interfaces, it happily does so but it silently drops all queries because the ACL allows localhost only (uhm, maybe it needs to say something in verbose mode or documentation update).
* The config format for IPv6 has a poor choice of ':' as a separator, it's not possible to forward to IPv6 address on a custom port.

Far-stretch ideas
-----------------

vavrusa