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|Component||Checks & Agents|
|Title||lnx_if: Fixed flapping discovery of interfaces if output of ethtool is missing|
|Checkmk Edition||Checkmk Raw Edition (CRE)|
|Compatibility||Incompatible - Manual interaction might be required|
Re-discoveries on Linux hosts which provide the lnx_if section may found new and vanished interfaces if the output of ethtool is missing. You have to perform a rediscovery on affected Linux hosts.
Moreover if you have already used a previous 1.6.0 version then some interface statistics may be faulty.
Details: lnx_if section consists of three parts: ip address, /proc/net/dev and ethtool. ip address and ethtool may be missing. If the index of ethtool is available we use this one. Otherwise we sort the output of /proc/net/dev as the agent does and calculate the index synthetically.