Werk #13765: Fritz!Box check plugins: Handly empty data correctly

Component	Checks & agents
Title	Fritz!Box check plugins: Handly empty data correctly
Date	Mar 17, 2022
Checkmk Editon	Checkmk Raw (CRE)
Checkmk Version	2.2.0i1 2.1.0b3 2.0.0p22
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed

The Fritz!Box check plugins did not handly empty data correctly:

• fritz_wan_if crashed with KeyError (NewLayer1DownstreamMaxBitRate).
• fritz_conn, fritz_config and fritz_link reported UNKNOWN.

Now, these plugins go stale instead, as expected.

To the list of all Werks