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Hello this is my ifconfig output:

eth0      Link encap:Ethernet  HWaddr 50:46:5d:44:5e:fe  
          inet addr:10.0.0.6  Bcast:10.0.0.255  Mask:255.255.255.0
          inet6 addr: fe80::5246:5dff:fe44:5efe/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Interrupt:19 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:7874 errors:0 dropped:0 overruns:0 frame:0
          TX packets:7874 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:1236727 (1.2 MB)  TX bytes:1236727 (1.2 MB)

wlan0     Link encap:Ethernet  HWaddr 60:36:dd:97:4a:f0  
          inet6 addr: fe80::6236:ddff:fe97:4af0/64 Scope:Link
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:34 errors:0 dropped:0 overruns:0 frame:0
          TX packets:55 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:5061 (5.0 KB)  TX bytes:9874 (9.8 KB)

As you can see there are no packets under eth0. If I try to monitor ethernet activity the graph is not doing anything at all. If I try it with a wifi It work just fine.

The way Im connected to internet is: Router --> switch --> my Ethernet port. Im running Xubuntu 14.04.

edit:

ip route:

default via 10.0.0.138 dev eth0  proto static 
10.0.0.0/24 dev eth0  proto kernel  scope link  src 10.0.0.6  metric 1 

route:

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
default         10.0.0.138      0.0.0.0         UG    0      0        0 eth0
10.0.0.0        *               255.255.255.0   U     1      0        0 eth0

I can ping 10.0.0.138

  • What are your routes? ip route or route? – garethTheRed Sep 17 '14 at 9:59
  • default via 10.0.0.138 dev eth0 proto static 10.0.0.0/24 dev eth0 proto kernel scope link src 10.0.0.6 metric 1 – Guest Sep 17 '14 at 10:01
  • It's best to edit your original post and add this sort of information. Is traffic flowing though? As in, can you ping 10.0.0.138? (again, add to your original post) – garethTheRed Sep 17 '14 at 10:06
  • Have you checked the results of other tools? ip -s link, cat /proc/net/dev, netstat -i. All ran using sudo. – garethTheRed Sep 17 '14 at 11:31
  • Yes they all give basically the same information as ifconfig – Guest Sep 17 '14 at 11:43
3

OK The solution to this problem was to upgrade the kernel from 3.13 to 3.14.

Many thanks to @garethTheRed for leading me to this solution.

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.14.1-trusty/linux-headers-3.14.1-031401_3.14.1-031401.201404141220_all.deb
wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.14.1-trusty/linux-headers-3.14.1-031401-generic_3.14.1-031401.201404141220_amd64.deb
wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.14.1-trusty/linux-image-3.14.1-031401-generic_3.14.1-031401.201404141220_amd64.deb
sudo dpkg -i linux-headers-3.14.1-*.deb linux-image-3.14.1-*.deb
sudo reboot

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