This is not caused by systemctl daemon-reexec. When the systemd package is upgraded (apparently happening during apt-daily-upgrade.service), some services will be restarted (see /var/lib/dpkg/info/systemd.postinst). This includes systemd- networkd.service.
And, systemd-networkd does not generally maintain link configuration across restarts. You can try using KeepConfiguration[1] in your network config, but note that does not cover all configuration options. [1] https://www.freedesktop.org/software/systemd/man/255/systemd.network.html#KeepConfiguration= ** Changed in: systemd (Ubuntu) Status: New => Incomplete ** Changed in: systemd (Ubuntu) Importance: Undecided => Medium -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2099676 Title: Network connectivity loss after systemctl daemon-reexec To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/2099676/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
