TODO-RELEASE: 1 fixed, 1 notabug

Fixed:

271 - fix the IPv6-working probing to only exist at one place in the code and
      only get done once

A problem not repeatable and no proper recipe given and therefore simply
removed for now until we hear something else:

282 - 100 Continue responses should return the "final" HTTP response code:
      "Getting the HTTP response code following a 100 Continue"