etc/network/interface empty no internet connection
up vote
0
down vote
favorite
My internet connection has gone suddenly and I find my /etc/network/interfaces is completely empty, I can't ping my router and ifconfig for eth0 shows no ip address or broadcast address, I tried network manager but it can't find a network, I tried adding eth0 to ip4 with its address and dns address. I'm completely stumped. The last thing I did before I rebooted to find no connection was run this command for sound
sudo alsa force-reload
I don't know if that could've caused, I'm at a loss, if anyone knows the correct way of getting a connection back from scratch I'd be euphoric
thanks
I've got to the stage where if I open etc/network/interface from the command line it's completely blank but if I open the file manually its populated but i can't edit it because it's read only even if I log into root, I'm not sure if there are two files but I can't find a way of finding out their directory addresses, sorry for my lack of knowledge, I guess there's an easy way, I guess the proper one has moved, how can I change permissions if root won't let me and get it back into its proper place
networking internet network-manager
asked Mar 25 '15 at 0:02
Dave Wold
625
add a comment |
up vote
0
down vote
favorite
My internet connection has gone suddenly and I find my /etc/network/interfaces is completely empty, I can't ping my router and ifconfig for eth0 shows no ip address or broadcast address, I tried network manager but it can't find a network, I tried adding eth0 to ip4 with its address and dns address. I'm completely stumped. The last thing I did before I rebooted to find no connection was run this command for sound
sudo alsa force-reload
I don't know if that could've caused, I'm at a loss, if anyone knows the correct way of getting a connection back from scratch I'd be euphoric
thanks
I've got to the stage where if I open etc/network/interface from the command line it's completely blank but if I open the file manually its populated but i can't edit it because it's read only even if I log into root, I'm not sure if there are two files but I can't find a way of finding out their directory addresses, sorry for my lack of knowledge, I guess there's an easy way, I guess the proper one has moved, how can I change permissions if root won't let me and get it back into its proper place
networking internet network-manager
asked Mar 25 '15 at 0:02
Dave Wold
625
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
My internet connection has gone suddenly and I find my /etc/network/interfaces is completely empty, I can't ping my router and ifconfig for eth0 shows no ip address or broadcast address, I tried network manager but it can't find a network, I tried adding eth0 to ip4 with its address and dns address. I'm completely stumped. The last thing I did before I rebooted to find no connection was run this command for sound
sudo alsa force-reload
I don't know if that could've caused, I'm at a loss, if anyone knows the correct way of getting a connection back from scratch I'd be euphoric
thanks
I've got to the stage where if I open etc/network/interface from the command line it's completely blank but if I open the file manually its populated but i can't edit it because it's read only even if I log into root, I'm not sure if there are two files but I can't find a way of finding out their directory addresses, sorry for my lack of knowledge, I guess there's an easy way, I guess the proper one has moved, how can I change permissions if root won't let me and get it back into its proper place
networking internet network-manager
asked Mar 25 '15 at 0:02
Dave Wold
625
My internet connection has gone suddenly and I find my /etc/network/interfaces is completely empty, I can't ping my router and ifconfig for eth0 shows no ip address or broadcast address, I tried network manager but it can't find a network, I tried adding eth0 to ip4 with its address and dns address. I'm completely stumped. The last thing I did before I rebooted to find no connection was run this command for sound
sudo alsa force-reload
I don't know if that could've caused, I'm at a loss, if anyone knows the correct way of getting a connection back from scratch I'd be euphoric
thanks
I've got to the stage where if I open etc/network/interface from the command line it's completely blank but if I open the file manually its populated but i can't edit it because it's read only even if I log into root, I'm not sure if there are two files but I can't find a way of finding out their directory addresses, sorry for my lack of knowledge, I guess there's an easy way, I guess the proper one has moved, how can I change permissions if root won't let me and get it back into its proper place
networking internet network-manager
networking internet network-manager
asked Mar 25 '15 at 0:02
Dave Wold
625
asked Mar 25 '15 at 0:02
Dave Wold
625
edited Mar 25 '15 at 10:32
asked Mar 25 '15 at 0:02
Dave Wold
625
asked Mar 25 '15 at 0:02
Dave Wold
625
asked Mar 25 '15 at 0:02
Dave Wold
625
625
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
up vote
1
down vote
For Desktop versions of Ubuntu (which use NetworkManager) the /etc/network/interfaces file should contain only the following loopback interface definition:
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
If your /etc/network/interfaces file is really completely empty, then paste the above into it, save and reboot.
edited Mar 25 '15 at 10:37
heemayl
65.7k8137210
answered Mar 25 '15 at 3:25
steeldriver
65.3k11104176
Thanks for advice, I followed instructions only to find that etc/network/interfaces doesn't exist, my router is up because I'm using it now on iPad wireless and my windows pc (wired) is working as well, I'm to new to Ubuntu to create the file, I can now ping router and ping 8.8.8.8, so I'm guessing DNS problem now, ipconfig one windows shows all IP addresses are the same since crash on router
– Dave Wold
Mar 25 '15 at 9:48
Did you typeetc/interfacesor/etc/interfaces? The leading/is important.
– steeldriver
Mar 25 '15 at 12:56
add a comment |
up vote
0
down vote
Try
ifconfig eth0 IP_ADDRESS netmask 255.255.255.0 up
to see if the network interface is actually available to the system. Just because it is not showing inside the /etc/network/interfaces it does not mean it is gone. Routers usually have some standard IP address like 192.168.1.1, 192.168.2.1 etc. You can also check its manual too see the details if you have not changed the configuration that is. ;)
I stumbled upon a similar problem here. Although its in a virtual environment it might be able to help you. You can also see a very basic structure of such file and fill the rest as you see fit.
As for the empty file I'm not sure how this happened. Upon shutdown system might have crashed (go figure why...) and data loss might have occurred, which in your case is unfortunate since this very important file has turned into garbage.
edited Apr 13 '17 at 12:23
Community♦
1
answered Mar 25 '15 at 0:50
rbaleksandar
31517
Thanks for help, host name lookup failure, the file has gone completely I'll have to compile a new one this should be fun
– Dave Wold
Mar 25 '15 at 9:53
You can use a live Ubuntu and use the file from there. Also you can do further network analysis of the situation by doing so.
– rbaleksandar
Mar 25 '15 at 11:44
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
1
down vote
For Desktop versions of Ubuntu (which use NetworkManager) the /etc/network/interfaces file should contain only the following loopback interface definition:
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
If your /etc/network/interfaces file is really completely empty, then paste the above into it, save and reboot.
edited Mar 25 '15 at 10:37
heemayl
65.7k8137210
answered Mar 25 '15 at 3:25
steeldriver
65.3k11104176
Thanks for advice, I followed instructions only to find that etc/network/interfaces doesn't exist, my router is up because I'm using it now on iPad wireless and my windows pc (wired) is working as well, I'm to new to Ubuntu to create the file, I can now ping router and ping 8.8.8.8, so I'm guessing DNS problem now, ipconfig one windows shows all IP addresses are the same since crash on router
– Dave Wold
Mar 25 '15 at 9:48
Did you typeetc/interfacesor/etc/interfaces? The leading/is important.
– steeldriver
Mar 25 '15 at 12:56
add a comment |
up vote
1
down vote
For Desktop versions of Ubuntu (which use NetworkManager) the /etc/network/interfaces file should contain only the following loopback interface definition:
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
If your /etc/network/interfaces file is really completely empty, then paste the above into it, save and reboot.
edited Mar 25 '15 at 10:37
heemayl
65.7k8137210
answered Mar 25 '15 at 3:25
steeldriver
65.3k11104176
Thanks for advice, I followed instructions only to find that etc/network/interfaces doesn't exist, my router is up because I'm using it now on iPad wireless and my windows pc (wired) is working as well, I'm to new to Ubuntu to create the file, I can now ping router and ping 8.8.8.8, so I'm guessing DNS problem now, ipconfig one windows shows all IP addresses are the same since crash on router
– Dave Wold
Mar 25 '15 at 9:48
Did you typeetc/interfacesor/etc/interfaces? The leading/is important.
– steeldriver
Mar 25 '15 at 12:56
add a comment |
up vote
1
down vote
up vote
1
down vote
For Desktop versions of Ubuntu (which use NetworkManager) the /etc/network/interfaces file should contain only the following loopback interface definition:
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
If your /etc/network/interfaces file is really completely empty, then paste the above into it, save and reboot.
edited Mar 25 '15 at 10:37
heemayl
65.7k8137210
answered Mar 25 '15 at 3:25
steeldriver
65.3k11104176
For Desktop versions of Ubuntu (which use NetworkManager) the /etc/network/interfaces file should contain only the following loopback interface definition:
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
If your /etc/network/interfaces file is really completely empty, then paste the above into it, save and reboot.
edited Mar 25 '15 at 10:37
heemayl
65.7k8137210
answered Mar 25 '15 at 3:25
steeldriver
65.3k11104176
edited Mar 25 '15 at 10:37
heemayl
65.7k8137210
edited Mar 25 '15 at 10:37
heemayl
65.7k8137210
edited Mar 25 '15 at 10:37
heemayl
65.7k8137210
65.7k8137210
answered Mar 25 '15 at 3:25
steeldriver
65.3k11104176
answered Mar 25 '15 at 3:25
steeldriver
65.3k11104176
answered Mar 25 '15 at 3:25
steeldriver
65.3k11104176
65.3k11104176
Thanks for advice, I followed instructions only to find that etc/network/interfaces doesn't exist, my router is up because I'm using it now on iPad wireless and my windows pc (wired) is working as well, I'm to new to Ubuntu to create the file, I can now ping router and ping 8.8.8.8, so I'm guessing DNS problem now, ipconfig one windows shows all IP addresses are the same since crash on router
– Dave Wold
Mar 25 '15 at 9:48
Did you typeetc/interfacesor/etc/interfaces? The leading/is important.
– steeldriver
Mar 25 '15 at 12:56
add a comment |
Thanks for advice, I followed instructions only to find that etc/network/interfaces doesn't exist, my router is up because I'm using it now on iPad wireless and my windows pc (wired) is working as well, I'm to new to Ubuntu to create the file, I can now ping router and ping 8.8.8.8, so I'm guessing DNS problem now, ipconfig one windows shows all IP addresses are the same since crash on router
– Dave Wold
Mar 25 '15 at 9:48
Did you typeetc/interfacesor/etc/interfaces? The leading/is important.
– steeldriver
Mar 25 '15 at 12:56
Thanks for advice, I followed instructions only to find that etc/network/interfaces doesn't exist, my router is up because I'm using it now on iPad wireless and my windows pc (wired) is working as well, I'm to new to Ubuntu to create the file, I can now ping router and ping 8.8.8.8, so I'm guessing DNS problem now, ipconfig one windows shows all IP addresses are the same since crash on router
– Dave Wold
Mar 25 '15 at 9:48
Thanks for advice, I followed instructions only to find that etc/network/interfaces doesn't exist, my router is up because I'm using it now on iPad wireless and my windows pc (wired) is working as well, I'm to new to Ubuntu to create the file, I can now ping router and ping 8.8.8.8, so I'm guessing DNS problem now, ipconfig one windows shows all IP addresses are the same since crash on router
– Dave Wold
Mar 25 '15 at 9:48
Did you type
etc/interfaces or /etc/interfaces? The leading / is important.– steeldriver
Mar 25 '15 at 12:56
Did you type
etc/interfaces or /etc/interfaces? The leading / is important.– steeldriver
Mar 25 '15 at 12:56
add a comment |
up vote
0
down vote
Try
ifconfig eth0 IP_ADDRESS netmask 255.255.255.0 up
to see if the network interface is actually available to the system. Just because it is not showing inside the /etc/network/interfaces it does not mean it is gone. Routers usually have some standard IP address like 192.168.1.1, 192.168.2.1 etc. You can also check its manual too see the details if you have not changed the configuration that is. ;)
I stumbled upon a similar problem here. Although its in a virtual environment it might be able to help you. You can also see a very basic structure of such file and fill the rest as you see fit.
As for the empty file I'm not sure how this happened. Upon shutdown system might have crashed (go figure why...) and data loss might have occurred, which in your case is unfortunate since this very important file has turned into garbage.
edited Apr 13 '17 at 12:23
Community♦
1
answered Mar 25 '15 at 0:50
rbaleksandar
31517
Thanks for help, host name lookup failure, the file has gone completely I'll have to compile a new one this should be fun
– Dave Wold
Mar 25 '15 at 9:53
You can use a live Ubuntu and use the file from there. Also you can do further network analysis of the situation by doing so.
– rbaleksandar
Mar 25 '15 at 11:44
add a comment |
up vote
0
down vote
Try
ifconfig eth0 IP_ADDRESS netmask 255.255.255.0 up
to see if the network interface is actually available to the system. Just because it is not showing inside the /etc/network/interfaces it does not mean it is gone. Routers usually have some standard IP address like 192.168.1.1, 192.168.2.1 etc. You can also check its manual too see the details if you have not changed the configuration that is. ;)
I stumbled upon a similar problem here. Although its in a virtual environment it might be able to help you. You can also see a very basic structure of such file and fill the rest as you see fit.
As for the empty file I'm not sure how this happened. Upon shutdown system might have crashed (go figure why...) and data loss might have occurred, which in your case is unfortunate since this very important file has turned into garbage.
edited Apr 13 '17 at 12:23
Community♦
1
answered Mar 25 '15 at 0:50
rbaleksandar
31517
Thanks for help, host name lookup failure, the file has gone completely I'll have to compile a new one this should be fun
– Dave Wold
Mar 25 '15 at 9:53
You can use a live Ubuntu and use the file from there. Also you can do further network analysis of the situation by doing so.
– rbaleksandar
Mar 25 '15 at 11:44
add a comment |
up vote
0
down vote
up vote
0
down vote
Try
ifconfig eth0 IP_ADDRESS netmask 255.255.255.0 up
to see if the network interface is actually available to the system. Just because it is not showing inside the /etc/network/interfaces it does not mean it is gone. Routers usually have some standard IP address like 192.168.1.1, 192.168.2.1 etc. You can also check its manual too see the details if you have not changed the configuration that is. ;)
I stumbled upon a similar problem here. Although its in a virtual environment it might be able to help you. You can also see a very basic structure of such file and fill the rest as you see fit.
As for the empty file I'm not sure how this happened. Upon shutdown system might have crashed (go figure why...) and data loss might have occurred, which in your case is unfortunate since this very important file has turned into garbage.
edited Apr 13 '17 at 12:23
Community♦
1
answered Mar 25 '15 at 0:50
rbaleksandar
31517
Try
ifconfig eth0 IP_ADDRESS netmask 255.255.255.0 up
to see if the network interface is actually available to the system. Just because it is not showing inside the /etc/network/interfaces it does not mean it is gone. Routers usually have some standard IP address like 192.168.1.1, 192.168.2.1 etc. You can also check its manual too see the details if you have not changed the configuration that is. ;)
I stumbled upon a similar problem here. Although its in a virtual environment it might be able to help you. You can also see a very basic structure of such file and fill the rest as you see fit.
As for the empty file I'm not sure how this happened. Upon shutdown system might have crashed (go figure why...) and data loss might have occurred, which in your case is unfortunate since this very important file has turned into garbage.
edited Apr 13 '17 at 12:23
Community♦
1
answered Mar 25 '15 at 0:50
rbaleksandar
31517
edited Apr 13 '17 at 12:23
Community♦
1
edited Apr 13 '17 at 12:23
Community♦
1
edited Apr 13 '17 at 12:23
Community♦
1
1
answered Mar 25 '15 at 0:50
rbaleksandar
31517
answered Mar 25 '15 at 0:50
rbaleksandar
31517
answered Mar 25 '15 at 0:50
rbaleksandar
31517
31517
Thanks for help, host name lookup failure, the file has gone completely I'll have to compile a new one this should be fun
– Dave Wold
Mar 25 '15 at 9:53
You can use a live Ubuntu and use the file from there. Also you can do further network analysis of the situation by doing so.
– rbaleksandar
Mar 25 '15 at 11:44
add a comment |
Thanks for help, host name lookup failure, the file has gone completely I'll have to compile a new one this should be fun
– Dave Wold
Mar 25 '15 at 9:53
You can use a live Ubuntu and use the file from there. Also you can do further network analysis of the situation by doing so.
– rbaleksandar
Mar 25 '15 at 11:44
Thanks for help, host name lookup failure, the file has gone completely I'll have to compile a new one this should be fun
– Dave Wold
Mar 25 '15 at 9:53
Thanks for help, host name lookup failure, the file has gone completely I'll have to compile a new one this should be fun
– Dave Wold
Mar 25 '15 at 9:53
You can use a live Ubuntu and use the file from there. Also you can do further network analysis of the situation by doing so.
– rbaleksandar
Mar 25 '15 at 11:44
You can use a live Ubuntu and use the file from there. Also you can do further network analysis of the situation by doing so.
– rbaleksandar
Mar 25 '15 at 11:44
add a comment |
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