Same problem with powerdns, I can't run it with apparmor profile,
because it complains:

operation="sendmsg" info="Failed name lookup - disconnected path"
error=-13 profile="/usr/sbin/pdns_server" name="run/systemd/journal/dev-
log" pid=17236 comm="pdns_server" requested_mask="w" denied_mask="w"
fsuid=0 ouid=0

I am not an expert, but I tried to put run/systemd/journal/dev-log into
the profile, but it is not accepted as it does not start with / ... But
this is what kernel log suggest, so what can I do otherwise?

Note: I have: /usr/sbin/pdns_server flags=(complain,attach_disconnected)

But still ... (now I have only complain mode).

If I exclude pdns from systemd it works btw, and no wonder as it seems
the problem somehow connected to systemd's journal, so it's better not
to use systemd if possible since it renders apparmor unusable in my
experience :( But for sure, I would be more than happy to have a better
option, rather than deleting systemd's unit file each time after upgrade
pdns ... Or so.

this is up-to-date Ubuntu 16.04.3 LTS 64 bit, fresh install, but I have
about a dozen of servers with this problem with different daemons as
well, not only powerdns.

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https://bugs.launchpad.net/bugs/1373070

Title:
  full fix for disconnected path (paths)

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