Package: systemd Version: 252.22-1~deb12u1 Severity: important X-Debbugs-Cc: [email protected]
Dear Maintainer, After upgrading systemd from 252.19-1~deb12u1 to 252.22-1~deb12u1 (Bookworm 12.4 to 12.5) the IFB network devices are no longer automatically created when loading the `ifb` module. This is a regression since previous releases as there is nothing mentioned about this in the changelog. It seems the root cause is that the following has been added to /lib/modprobe.d/systemd.conf [part of .../systemd.conf] # Do the same for ifb0. options ifb numifbs=0 [end] How this will affect your system depends a lot on what you use the IFB device(s) for. In my case it is used in combination with a QoS scheduling/shaping setup. For now I have worked around this change by adding the IFB device I needed manually with the command `ip link add ifb0 numtxqueues 8 type ifb`. And from what I can tell the kernel default setting is `numifbs=2`.
