Werk #12296: Fix IPv6 handling in dual stack

Component Checks & agents
Title Fix IPv6 handling in dual stack
Date Mar 2, 2021
Checkmk Editon Checkmk Raw (CRE)
Checkmk Version 2.1.0i1 2.0.0b8
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed

Selecting IPv6 as the default of a dual stack configuration would break the communication with the host with the following error: "Communication failed: [Errno -9] Address family for hostname not supported".

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