This seems like a duplicate of bug #1540672, but there isn't enough
information in this bug. Are you still seeing this with up to date
xenial? Can you undo the changes to the profile and perform 'ubuntu-bug
1540672' so that more information can be attached to this bug? Also,
please attach your profile after undoing the changes.
** No longer affects: apparmor (Ubuntu)
** Tags added: apparmor
** Changed in: isc-dhcp (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1540672
Title:
[xenial] dhcp server does not work with apparmor enabled
Status in isc-dhcp package in Ubuntu:
Incomplete
Bug description:
I only seem to be able to make my dhcp server work properly by disabling
apparmor.
With apparmor enabled it seems to complain that it is unable to open the
leases file for append.
With apparmor either disabled completely (via linux command line in grub), or
set to complain mode for /usr/sbin/dhcpd, the dhcp server appears to work fine
(so far).
Observed with 2.10-0ubuntu11, and 2.10-0ubuntu12 (from the update of
today). I do not know about any previous version, as this is my first
attempt with xenial at setting up a dhcp server.
My system is being built fresh from the daily Ubuntu server AMD64 ISO
of 2016.01.30. The hard disk is new, as the old one (12.04 server)
failed.
I do not know if it is relevant, but I do notice an edit date of
2016.01.25 in /etc/apparmor.d/usr.sbin.dhcpd
The main problem log line:
kernel: [ 22.629981] audit: type=1400 audit(1454368046.405:10):
apparmor="DENIED" operation="capable" profile="/usr/sbin/dhcpd"
pid=1198 comm="dhcpd" capability=1 capname="dac_override"
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