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Tags: networking   network-manager   systemd   raspberrypi   arm  
Link: πŸ” See Original Answer on Ask Ubuntu πŸ”—

URL: https://askubuntu.com/q/853689
Title: Files in /etc/network/interfaces.d ignored, but not /etc/network/interfaces itself
ID: /2016/11/26/Files-in-_etc_network_interfaces.d-ignored_-but-not-_etc_network_interfaces-itself
Created: November 26, 2016    Edited:  June 12, 2020
Upload: November 24, 2022    Layout:  post
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Your Kernel 3.10 is too old for systemd IFF using systemd-v230 or newer.

According to systemd kernel requirements in github at (github.com - systemd README) you need version >= 3.12 if you are using systemd-v230 or newer:

REQUIREMENTS:
        Linux kernel >= 3.12
        Linux kernel >= 4.2 for unified cgroup hierarchy support

Lines 37, 38 and 39 are printed above.

You are running under ARM architecture which I frankly know little about. Google search tells me your armvl7 is used by Raspberry Pi and is a 32 bit kernel.

Updating your Kernel to modern times

If you want the latest (October 21, 2016) β€œDirty COW” security protection (What is the "Dirty COW" bug, and how can I secure my system against it?) plus a host of other security patches, bug fixes and system improvements (after your 2013 version) you should be on kernel 4.4.0-47.

Unfortunately I don’t know how to do that for a RaspberryPi. I have linked this question to people who use RaspberryPi and have asked them to critique this answer.

⇧ How do I get the CPU temperature? What causes my fan to run?  β‡©