refactor: rename badly named function
makeAddressReply handles both A and AAAA records
handle AAAA queries for external IPs

Closes #188.
Differentiate between failure cases in http_call

.. otherwise, no networking can look like no running container.
Better terminologicals for no-IP case
Better phrasing for http_call error messages
simplify
Merge branch 'squaremo-issue191'

Fixes #191.