I've just been bitten by this one too: trying to run:
dhcpd3 -f -cf /tmp/dhcpd.conf -lf /tmp/dhcpd.leases -pf
/tmp/dhcpd.pid wlan2
and all I get is a permission-denied error on the file /tmp/dhcpd.conf
Even stracing it doesn't help.
If apparmour is going to block something, please could it be
Thank you for using Ubuntu and taking the time to report a bug. In
examining your syslog output, it is clear that you are not running
Ubuntu packages, have installed software into non-standard locations
(file in /usr/local), or have symlinked files in /var to /usr/local. To
workaround this, update
** Attachment added: "Dependencies.txt"
http://launchpadlibrarian.net/25078761/Dependencies.txt
--
can't create file: permission denied by apparmor
https://bugs.launchpad.net/bugs/358035
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