Bug#1111791: Acknowledgement (systemd: network-online.target reached before IPv6 address is ready)

[Nick Rosbrook]

If you are using /etc/network/interfaces, is the interface even being
managed by systemd-networkd? The output of:

$ networkctl
$ SYSTEMD_LOG_LEVEL=debug /usr/lib/systemd/systemd-networkd-wait-online

would help you determine if systemd-networkd-wait-online is even at play here.

Otherwise, if you are using ifupdown, then you need to look at
/usr/lib/systemd/system/networking.service from ifupdown. If that
service is completing before your IPv6 address is ready, then other
services cannot reliably synchronize on network-online.target.

$ systemctl list-dependencies --after network-online.target

will show you what specific units are ordered Before=network-online.target.

On Fri, Aug 22, 2025 at 8:03 AM Marcelo Gondim <gondim at gmail.com> wrote:
>
> Hi,
>
> I see, that would be a workaround. But do you have any idea why this
> only started happening in Trixie?
>