Merge pull request #3180 from ahupowerdns/local-fixes

Fix up our reporting of address queries are received on, expose port numbers to Lua for dndist and recursor

diff --cc pdns/README-dnsdist.md
Simple merge

diff --cc pdns/dnsdist-lua.cc
Simple merge

diff --cc pdns/dnsdistconf.lua
Simple merge

diff --cc pdns/iputils.hh
Simple merge

diff --cc pdns/pdns_recursor.cc
Simple merge