Comment 2 for bug 358035

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 /etc/apparmor.d/sbin.dhclient to give access to the necessary files, and restart apparmor with:

$ sudo /etc/init.d/apparmor force-reload