This problem is gone in the 5.6.0 beta version of Qt, but still present in the 5.5.1-versions available for stretch/sid.
- Bug#804883: QNAM does not report correct NetworkAccessibil... Ralf Jung
- Bug#804883: QNAM does not report correct NetworkAcces... Dmitry Shachnev
- Bug#804883: QNAM does not report correct NetworkAcces... Mirko Vogt
- Bug#804883: QNAM does not report correct NetworkA... Mirko Vogt
