Public bug reported:
[Impact]
If there default network configuration does not actually get a server online,
the live server installer only avoids a long delay by dint of relying on some
dubious behaviour of networkd: if all interfaces are marked optional: true,
systemd-networkd-wait-online does not wait. If we want to fix this bug so that
systemd-networkd-wait-online.service means the machine is actually online, then
the live server installers boot will be slow.
The fix, already present in cosmic, is to just symlink systemd-networkd-
wait-online to /bin/true.
[Test plan]
Boot the live server installer in a VM with no NICs, or with nics that do not
have an answering dhcp.
[Regression potential]
As the boot behaviour is not changed (i.e. boot is not delayed even if there is
no network) there should be no subtle regressions once the basic bits have been
verified to work.
** Affects: livecd-rootfs (Ubuntu)
Importance: Undecided
Status: Fix Released
** Affects: livecd-rootfs (Ubuntu Bionic)
Importance: Undecided
Status: New
** Changed in: livecd-rootfs (Ubuntu)
Status: New => Fix Released
** Also affects: livecd-rootfs (Ubuntu Bionic)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1773719
Title:
live server depends on arguably buggy systemd-networkd behaviour to
avoid slow boot
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