Werk #19982: Infoblox DNS statistics: Fix crash on empty counter values

Component	Checks & agents
Title	Infoblox DNS statistics: Fix crash on empty counter values
Date	Jun 30, 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 2.5.0p9 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT 2.4.0p34 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT 2.3.0p49 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

Previously, the DNS statistics service on Infoblox appliances could crash with the following error when the device reported empty values for some of its per-zone DNS counters:

ValueError: invalid literal for int() with base 10: ''

This was observed for example on AWS-hosted vNIOS instances, where only the "successful responses" counter was populated and the remaining counters were returned empty.

Empty counter values are now treated as 0, so the service no longer crashes and reports the available counters as usual.

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