I've just installed Raspbian.

Loaded it up with ethernet (led is on).

Everything went smooth for about an hour.

Left it while programming in a text file.

Then the internet went down. tried to ping, it says

connect: Network is unreachable

This will go back to normal IF i reboot Raspberry Pi

Power Cable is 5V 1A

  • Are you 100% that rebooting the raspberry pi fixed it? Cause I am having problems with internet that is sometimes going down all of the sudden. (with everything) and I once restarted and I had internet again but it wasn't because I restarted it. It was just coincidental.
    – Loko
    Nov 6, 2013 at 10:15
  • Try to disconnect usb devices. Set up a ssh access and see if there's any difference.
    – kursus
    Nov 6, 2013 at 18:51
  • Unusually that the internet goes like that. Can you still ping other devices on the LAN, e.g. the router?
    – Fred
    Mar 7, 2014 at 7:58

2 Answers 2


I've never noticed the ethernet drop out and I've had it on most of the time for months. But...

The next time this happens, try service networking restart. If that doesn't work, try in order:

service networking stop
dhclient -r
ifconfig eth0 up
dhclient eth0

If that works, leave a comment and I can give you a suggestion for keeping the interface up.

  • i've tried this. still the same error
    – AFwcxx
    Nov 20, 2013 at 9:15
  • okay, looks like when ethernet drop out, i had to sudo /etc/init.d/networking reload all the time!
    – AFwcxx
    Nov 20, 2013 at 9:34

Are you sure, that you have 5V 1A ? I had the same issue, I had a power cable saying 5V 1A but it just got 5V 0.5A. Try a different power supply and report again :)

  • Confirm. am using android samsung charger.
    – AFwcxx
    Nov 6, 2013 at 11:06
  • Is the problem solved, or does this happen all over again ? Nov 6, 2013 at 12:11
  • yeap. it happened again after my last reboot. connection lasts around two hours before it dropped. i tried adding servername in /etc/resolve.conf still, no difference.
    – AFwcxx
    Nov 6, 2013 at 13:52

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