Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have an embedded linux installation (custom built using buildroot, uClibc and busybox) and I am unable to ping any machine on my local network. My /etc/network/interfaces file is as follows

auto lo
iface lo inet loopback

auto eth1
iface eth1 inet static 

These values were given to me by our network administrator. The route command yields the following output

Destination      Gateway     Genmask        Flags   Metric Ref  Use Iface
default        UG       0      0    0   eth1     *   U        0      0    0   eth1

so it appears that the routing is set up as it should be. Unfortunately, I am completely unable to ping any other machine on this local network - not even the gateway. When utilising connection to another company network that does not have a gateway, I can communicate with all machines on that network, but when the gateway is involved I get nothing.

I have used the Wireshark utility on another machine to sniff all packets and I can see that my embedded device IS transmitting ARP requests whenever I try using that device to ping the gateway so I know that the ethernet adaptor is working. Unfortunately, the request is either not getting through to the gateway or is being ignored. I am at a loss here - I am not a network specialist at all. Is there anything I have failed to do in order to get my machine to be recognised by the network? What kind of thing leads to ARP requests being ignored or failing to reach the gateway? Any help/advice will be gratefully received.

share|improve this question
You contact the network administrator and ask what's going on. – Michael Hampton Mar 5 '13 at 14:35
is the same subnet mask configured on the other machines and the gateway? – user1008764 Mar 5 '13 at 14:36
Can you give us the output of "arp" and "ifconfig"? – wookie919 Mar 5 '13 at 23:39

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.