I'm trying to set up cron to turn off networking on my Raspberry Pi during the night (from 23:00 to 8:00).The problem is that none of this commands do the job:$ sudo service networking stop$ sudo ifconfig eth0 down$ sudo ifdown eth0From the output it looks like the command worked but the interface is still up (I can ping 8.8.8.8 and it's present in ifconfig).This is the content of /etc/network/interfacesauto loiface lo inet loopbackauto eth0allow-hotplug eth0iface eth0 inet manualauto wlan0allow-hotplug wlan0iface wlan0 inet manualwpa-conf /etc/wpa_supplicant/wpa_supplicant.confauto wlan1allow-hotplug wlan1iface wlan1 inet manualwpa-conf /etc/wpa_supplicant/wpa_supplicant.confoutput of ifconfig (masked MAC)eth0      Link encap:Ethernet  HWaddr xx:xx:xx:xx:xx:xx            inet addr:192.168.1.102  Bcast:192.168.1.255  Mask:255.255.255.0          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1          RX packets:1545 errors:0 dropped:0 overruns:0 frame:0          TX packets:1054 errors:0 dropped:0 overruns:0 carrier:0          collisions:0 txqueuelen:1000           RX bytes:117138 (114.3 KiB)  TX bytes:156391 (152.7 KiB)lo        Link encap:Local Loopback            inet addr:127.0.0.1  Mask:255.0.0.0          UP LOOPBACK RUNNING  MTU:65536  Metric:1          RX packets:8 errors:0 dropped:0 overruns:0 frame:0          TX packets:8 errors:0 dropped:0 overruns:0 carrier:0          collisions:0 txqueuelen:0           RX bytes:1104 (1.0 KiB)  TX bytes:1104 (1.0 KiB)output of route -nKernel IP routing tableDestination     Gateway         Genmask         Flags Metric Ref    Use Iface0.0.0.0         192.168.1.1     0.0.0.0         UG    202    0        0 eth0192.168.1.0     0.0.0.0         255.255.255.0   U     202    0        0 eth0Any help?
Turn off network on Raspbian
linux;debian;networking