Werk #14565: inv_if: Fix crash on innovaphone IP811

Component Checks & agents
Title <tt>inv_if</tt>: Fix crash on innovaphone IP811
Date Nov 10, 2022
Checkmk Editon Checkmk Raw (CRE)
Checkmk Version 2.2.0i1 2.1.0p17 2.0.0p31
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed

Previously, the inventory plugin inv_if would crash while inventorizing interfaces on a innovaphone IP811 with the message

Parsing of section inv_if failed

This could potentially happen on other devices, if they report 'NULL' to indicate missing values. With this werk, interfaces with this kind of missing information are omitted.

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