am a1067c8d: Improve error return values on network selection.

* commit 'a1067c8d2b2165f1058a3a8216bed4efacfa1c80':
  Improve error return values on network selection.
tree: b16b0719cd09fdf4ea417aba2391fb3f8ac8a104
  1. client/
  2. include/
  3. server/