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Werk #16912: host_labels_if: don't filter IPv4 APIPA (link-local) addresses

Component Checks & agents
Title host_labels_if: don't filter IPv4 APIPA (link-local) addresses
Date Mar 19, 2026
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
2.5.0b2
Not yet released
Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

APIPA addresses (169.254.0.0/16) are link-local for IPv4 and had been filtered when concidering whether a host is 'singlehomed' or 'multihomed', but represent legitimate network configurations.

This change limits fitering for link-local to IPv6.

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