#2375 Issue closed: Add auto-detection of DHCP client with systemd-networkd¶

Labels: enhancement, fixed / solved / done

OliverO2 opened issue at 2020-04-17 12:23:¶

• ReaR version ("/usr/sbin/rear -V"): Relax-and-Recover 2.5 / Git

• OS version: Ubuntu 18.04 Server and others

• Description of the issue:

  ReaR can auto-detect a DHCP client on the original system and configure the rescue system accordingly. Currently, the auto-detection relies on finding a running DHCP client process.

  Ubuntu 18.04 Server by default uses systemd-networkd(8), which has a built-in DHCP client. ReaR should detect if this is enabled (cf. systemd.network(5)) and configure the rescue system accordingly.

  Note that Ubuntu 18.04 Desktop by default still uses NetworkManager which fires up dhclient. This was already correctly detected by ReaR before.

  Also note that Ubuntu 18.04 by default uses netplan(5) to configure the networking setup. Netplan uses a YAML configuration to generate the respective configuration files for systemd-networkd or NetworkManager. Yet, these generated configurations can be overridden:

  In case of systemd-networkd, if netplan had generated a configuration file /run/systemd/network/10-netplan-eno1.network, it could be overridden by creating a configuration file /etc/systemd/network/10-netplan-eno1.network.

• Note: PR upcoming

jsmeix commented at 2020-04-22 13:49:¶

With https://github.com/rear/rear/pull/2376 merged
this issue is done.

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[Export of Github issue for rear/rear.]