Werk #15409: Agent receiver crashes on IPv4-only Checkmk servers (regression introduced by werk 15416)

Component Checks & agents
Title Agent receiver crashes on IPv4-only Checkmk servers (regression introduced by werk 15416)
Date Mar 7, 2023
Checkmk Edition Checkmk Raw (CRE)
Checkmk Version 2.1.0p24 2.2.0b1 2.3.0b1
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed

Werk 15416 introduced a regression which caused the agent receiver to crash on IPv4-only Checkmk servers. After starting, the receiver was initially reported as running for a brief amount of time by omd status, however, it then crashed with the following error message: var/log/agent-receiver/error.log

[ERROR] Can't connect to ('::', 8000)

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