I'm getting these at startup:

systemd[1]: File /lib/systemd/system/systemd-journald.service:33 configures an IP firewall (IPAddressDeny=any), but the local system does not support BPF/cgroup based firewalling.
systemd[1]: Proceeding WITHOUT firewalling in effect!
systemd[1]: File /lib/systemd/system/systemd-udevd.service:32 configures an IP firewall (IPAddressDeny=any), but the local system does not support BPF/cgroup based firewalling.
systemd[1]: Proceeding WITHOUT firewalling in effect!
systemd[1]: File /lib/systemd/system/systemd-logind.service:34 configures an IP firewall (IPAddressDeny=any), but the local system does not support BPF/cgroup based firewalling.
systemd[1]: Proceeding WITHOUT firewalling in effect!

What do I need to make this work? I found this:

  https://github.com/systemd/systemd/issues/7188

But CONFIG_BPF_SYSCALL is enabled and I still get that message.

This is on kernel 4.9.59 with systemd 235.


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