On Mon, Jan 12, 2026 at 11:44:37 -0500, Jeffrey Walton wrote: > On Sun, Jan 11, 2026 at 4:58 AM Reinder <[email protected]> wrote: > > > > > > > > At the moment I am thinking maybe ifup is still doing something? Though > > > there is no inet6 configuration in /etc/network/interfaces: > > > > > It seems to be indeed an ifupdown issue, forcing a static ipv6 in > > /etc/network/interfaces works, see below. > > Problem is I did not want to do this. Will debug some more. > > If I am not mistaken... If you are not using NetworkManager, and you > are not using Systemd, and you are not using Kea, then you are > probably using dhcpcd-base+ifupdown. > > Maybe there's something in dhcpcd-base that will provide the next path > to go down.
They might be using isc-dhcp-client instead. My trixie system is using that, but it was installed on an older release and upgraded. I don't know what a new trixie installation uses for its DHCP client.
