Werk #11525: lnx_if: Treat only interfaces with UP and LOWER_UP (bracket info from ip address) as UP

Component

Checks & agents

Title

lnx_if: Treat only interfaces with UP and LOWER_UP (bracket info from ip address) as UP

Date

Jan 14, 2021

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

2.1.0b1	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)
2.0.0b5	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)
1.6.0p21	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

Previously we only checked <...,UP> in the bracket info and treated this interface as UP if and only if no output of ethtool is available.

Please have a look at the following scenarios and how we now determine whether an interface is UP:

<BROADCAST,MULTICAST,UP,LOWER_UP> means that this interface has a link and is UP
<NO-CARRIER,BROADCAST,MULTICAST,UP> means that this interface is configured and ADMIN UP but has no link
<BROADCAST,MULTICAST> means that this interface is not configured