Werk #19842: pfsense_if: skip interfaces with empty name during discovery

Component	Checks & agents
Title	pfsense_if: skip interfaces with empty name during discovery
Date	Apr 21, 2026
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	3.0.0b1 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT 2.5.0p1 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT 2.4.0p38 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

When the pfSense SNMP data included an interface entry with an empty name, service discovery crashed with TypeError: 'item' must be a non empty string or ommited entirely, got '' because Service(item="") is not allowed.

Empty-name entries are now skipped during parsing so that discovery yields only valid services.

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