No internet connection on Ubuntu Server 12.04 LTS

command-line networking server

43,716

Solution 1

Try this:

Place the DNS servers in /etc/network/interfaces, not in /etc/resolv.conf

Add this line at the bottom of your static configurations

dns-nameservers 208.67.222.222 208.67.220.220 #OpenDNS' servers as example

Then run these commands in the terminal to restart the interface.

sudo su

ifdown eth0 && ifup eth0

Hope this works!

Solution 2

Setting aside the that this is a VM and if hypervisor is setup correctly to forward packets from this VM.

Please uncomment #auto eth0 <-- this is a comment and issue a network service restart: sudo service network restart

This tells the system to bring the interface up automatically at boot.

Else you can issue the command

sudo ifconfig eth0 up at each boot.

43,716

Author by

Paul

Linux user.

Updated on September 18, 2022

Comments

Paul over 1 year
I have an Ubuntu server and I cannot get Internet connection over this. The IP,subnet,gateway and the 2 DNS servers that I have been given is standard addresses that I must put into. I will give details of this:

1)
```
ping 8.8.8.8 
```
returns
```
Network is unreachable
```
2)
```
sudo nano /etc/network/interfaces
```
is set to
```
#The loopback network interface
auto lo
iface lo inet loopback

#The primary network interface
#auto eth0 <-- this is a comment
iface eth0 inet static
address "My_static_ip_here"
netmask 255.255.255.0
gateway  "My_Gateway_here"
```
3)
```
sudo nano /etc/resolve.conf
```
is set to
```
nameserver "My_DNS_server_1_here"
nameserver "My_DNS_server_2_here"
```
Finally, ifconfig

returns 127.0.0.1 address and a subnet 255.0.0.0 ofcourse on lo I cannot give detailed ifconfig here because of the limitations that I got. PS: This is a virtual machine that I am using. PS2: I tried to auto-dhcp it with iface eth0 inet dhcp but during the networking restart it kept loading and loading forever, so that does not work and I want to give this static IP.
Nullet over 10 years

@George: You should restart network service like this: sudo service networking restart
squareborg over 10 years

Does ping 8.8.8.8 work now, if yes then its a DNS issue now.
Paul over 10 years

This works fine! Thanks very much. And I have thought about that and I said "nah, it will not be a difference". Greetings!
Paul over 10 years

Thanks guys. It is solved now. Thanks for your immediate answers.