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 <[email protected]> wrote: > > Hi, > > I see, that would be a workaround. But do you have any idea why this > only started happening in Trixie? >

