AppArmor

AppArmor usually isn't too intrusive, but sometimes it gets in the way of packet sniffing and running a virtual host.

apparmor_status
# GRUB_CMDLINE_LINUX="apparmor=0"
sudo sed -i 's/GRUB_CMDLINE_LINUX=.*\+/GRUB_CMDLINE_LINUX="apparmor=0"/' /etc/default/grub