Sorry for the delay; I need to re-test this again with upstream code to
verify it does reproduce there (or not) before working to backport any
fix.
** Changed in: systemd (Ubuntu)
Assignee: (unassigned) => Dan Streetman (ddstreet)
** Changed in: systemd (Ubuntu)
Importance: Undecided => Medium
** Changed in: systemd (Ubuntu)
Status: New => In Progress
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https://bugs.launchpad.net/bugs/1833193
Title:
systemd-networkd fails to apply static IPv4 when the static IP is the
same as previously configured by DHCP
Status in systemd:
Fix Released
Status in systemd package in Ubuntu:
In Progress
Bug description:
In bionic, running systemd 237-3ubuntu10.22 and netplan.io
0.97-0ubuntu1~18.04.1, systemd-networkd fails to configure an
interface with a static IPv4 address if the statically confiugred
address is the same as the interface already has gotten from DHCP.
This will cause the interface to loose its IP address when the DHCP
lease exires, even though you've told netplan to configure it as
static.
I expect systemd-networkd to actually configure an IP address as
static, regardless of what address the interface has before from DHCP.
# lsb_release -rd
Description: Ubuntu 18.04.2 LTS
Release: 18.04
# apt-cache policy systemd
systemd:
Installed: 237-3ubuntu10.22
# apt-cache policy netplan.io
netplan.io:
Installed: 0.97-0ubuntu1~18.04.1
A paste of systemd-networkd's debug log when I run "netplan apply" and
the interface already has the static IP configured from DHCP.
It seems like upon a restart, systemd-networkd will allways add
whatever IP config it had before the service stopped, and then apply
changes (if any). Since my new config has the same IP as it already
had, it does nothing even though the new config has static
configuration.
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