I'm still digging on this one - the error Activation via systemd failed for unit 'dbus-org.freedesktop.network1.service': Unit dbus-org.freedesktop.network1.service not found seems to be related, for me, to the networkd service not starting properly - not sure why:
#: john@j4lt:/etc/strongswan.d ; sudo systemctl status systemd-networkd.service [sudo] password for john: ○ systemd-networkd.service - Network Configuration Loaded: loaded (/lib/systemd/system/systemd-networkd.service; disabled; preset: enabled) Active: inactive (dead) TriggeredBy: ○ systemd-networkd.socket Docs: man:systemd-networkd.service(8) man:org.freedesktop.network1(5) But that can be resolved by sudo systemctl restart systemd-networkd.service But then the error changes to [IKE] installing DNS server 172.18.1.3 via resolvconf [IKE] resolvconf: Dropped protocol specifier '.ipsec' from 'lo.ipsec'. Using 'lo' (ifindex=1). [IKE] resolvconf: Failed to set DNS configuration: Link lo is loopback device. [IKE] adding DNS server failed which probably makes sense. I might ask Tobias, the maintainer of Strongswan, about this - and the fact Ubuntu seems to use lo as the loopback interface, which conflicts, seemingly, with strongswan using lo.ipsec, and dropping the .ipsec -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2067897 Title: Ubuntu 24.04 does not install resolvconf uses systemd-resolved instead which is broken To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/2067897/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs