Merge pull request #6100 from pieterlexis/ipv4-ipv6-equiv

auth: make outgoing-query-address{,6} behaviour equivalent

diff --cc pdns/misc.cc
Simple merge

diff --cc pdns/misc.hh
Simple merge

diff --cc pdns/resolver.cc
Simple merge

diff --cc pdns/rfc2136handler.cc
Simple merge

diff --cc pdns/slavecommunicator.cc
Simple merge