-# Make the MTU change persistent between reboots
-sed -i '/lxc list/d' /etc/rc.local
-sed -i "$ i lxc list > /dev/null" /etc/rc.local
-sed -i '/ifconfig lxdbr0 mtu/d' /etc/rc.local
-sed -i "$ i ifconfig lxdbr0 mtu $DEFAULT_MTU" /etc/rc.local
+# This sets the MTU of lxdbr0 on the host machine without the need to recycle
+# the interface or reboot the machine.
+ifconfig lxdbr0 mtu $DEFAULT_MTU