0
votes
0answers
821 views

Ubuntu network keeps giving Network Disconnected - You are now offline message

On the face of it, you will find that this is a common question but please read it completely to understand the specific issue that I have. I am running Ubuntu 12.04.4. I keep getting this network ...
1
vote
0answers
79 views

EC2 instance with two internal IPs - using ifconfig

I am trying to allocate another internal IP to an EC2 (classic - not VPC) instance with the following command. sudo ifconfig eth0:0 inet 10.80.7.40 netmask 255.255.255.0 Here, 10.80.7.40 is just a ...
1
vote
2answers
369 views

ifupdown: interface does not get properly configured

Since some days ago, I'm suffering a traumatic problem with Debian Wheezy. Every time I boot the server, the only up interface is loopback. I have configured a static IP at /etc/network/interfaces ...
3
votes
1answer
390 views

`ifconfig` isn't showing stats for an alx gigabit card

So I just setup conky on my arch box for monitoring various stats on the desktop, and I'm having a small problem. The relevant text in my conky config: down $alignr ${downspeedf enp9s0} kb/s - ...
1
vote
1answer
402 views

ppp0 strange default router address

I'm using 3G-modem to provide an Internet connection to my Linux box. So, when I issue ifconfig command, I see the following: ppp0: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1500 ...
0
votes
2answers
70 views

Check NIC is connected to a router

I have access to a remote machine which has two network interfaces, eth0 is connected to same network I am in, so I am able to connect to it. But I need to test some usecases on eth1 but I am not sure ...
0
votes
1answer
168 views

Convert ifconfig command to iproute2

I am using this ifconfig command to set IP on a network interface ifconfig eth0 x.x.x.x netmask x.x.x.x mtu 1400 Now they say that ifconfig is deprecated and I should use iproute2. I converted ...
1
vote
3answers
381 views

What is the real capacity of a network device (ethtool - MiB or MB?)

MiB = MebiByte = 1024*1024 MB = MegaByte = 1000*1000 ethtool returns speed = 1000MB/s ifconfig documentation indicated it returns units of MiB How can I tell from that ...
0
votes
0answers
283 views

how to change ip address in the correct way on linux?

I'm working with wheezy. I have configured the /etc/network/interfaces file so that the wlan gets the ip address from the dhcp server. after that I have imposed a different static ip address in the ...
0
votes
2answers
79 views

Linux: Any distro-independent way to change and persist IP settings?

Are there any distribution-independent mechanisms for tasks like assigning static IP addresses, adding or deleting routes, etc and, then, also be able to persist the changes so made? AFAIK, each ...
0
votes
1answer
294 views

Network conf - ever time must set ifconfig

I need to autoconfigure network. Network Manager is removed because I need lightweight system. After system starts networks doesn't work. #service networking status networking stop/waiting #service ...
1
vote
0answers
196 views

What causes a TX overrun, and how to troubleshoot?

On a Linux machine acting as a router I have a large number of TX 'overruns'. The machine routes through a tunnel interface (which is where the overruns are occuring). What would cause these ...
0
votes
0answers
652 views

ifconfig won't let me set MAC address that doesn't begin with 00:26

I have an Intel 1000 BGN Wi-Fi card and I tried to set its MAC address to 00:00:de:ad:be:ef, but this didn't work: [root@localhost .]# ifconfig wlan0 hw ether 00:00:de:ad:be:ef SIOCSIFHWADDR: Cannot ...
0
votes
1answer
2k views

Install Ubuntu, eth0 not detected?

I have installed Ubuntu laptop Toshiba Satellite L640?, and I had difficulty, that is how to enable network interfaces, eth0 was not detected when running ifconfig.
3
votes
4answers
273 views

Three computers accessing internet but only two network interfaces showing in ´ifconfig´, why?

My gateway(router) is connected to DSL. The gateway connects to 1 wireless transceiver device. 2 fixed computers connect to the router. At the moment of me doing ifconfig 2 fixed computers were ...
1
vote
1answer
270 views

ifconfig fails to install route if interface ip is existing broadcast address

Consider the following setup: X@Y:~$ sudo ip link add link eth0 name eth0.3 type vlan id 3 X@Y:~$ sudo ip link add link eth0 name eth0.2 type vlan id 2 X@Y:~$ sudo ifconfig eth0.2 192.168.2.1/30 ...
1
vote
1answer
1k views

What does eth0:cp1 refer to in ifconfig on CentOS?

I have a basic ubuntu background and am not familiar with the output of an ifconfig on a CentOS server I'm looking at, can someone explain the eth0:cp1, and eth0:cp2 entries here? How are they ...
0
votes
1answer
441 views

What does the field `Memory` mean in `ifconfig`?

I find a field Memory in the result of ifconfig command. I am not quite clear about its meaning. By googling, I get some hint from unSpawn's post on this thread that Memory indicate what memory ...
1
vote
1answer
576 views

Configure IP v6 on Linux machine

I use this command to assign a site-scope IP address: $ sudo ifconfig eth0 inet6 add fee3::216:cbff:fe94:1a86/64 $ Check it with ifconfig: $ ifconfig ... eth0 Link encap:Ethernet HWaddr ...
2
votes
3answers
3k views

How to restore MAC address in Linux?

I have changed my MAC address in my Linux machine using ifconfig. Now the problem is I have not saved my original MAC address. I want to restore it without rebooting. Is there a way to do it?
0
votes
2answers
3k views

How can I remove a network interface from being listed in Linux?

A software I use gets confused if there is irda0 (or some other uncommon device) in the ifconfig -a output. What is the easiest way of preventing that device from getting listed? I'm looking for an ...
19
votes
2answers
5k views

ip versus ifconfig

After reading this answer, I began my quest for the difference between ip and ifconfig for *nix systems. I soon learned that ip had "more" features than ifconfig, but what's the real difference? Is ...
4
votes
2answers
636 views

Is `ip` to supersede `ifconfig`

A friend of mine said that ip is supposed to be the successor of ifconfig and iwconfig — yet I found no Wikipedia article about it and have never seen anyone mention or recommend it online even though ...
0
votes
1answer
6k views

ifconfig return “unknown interface: no such device”

I'm trying to install a Linux driver for my wireless network card (D-Link DWL-G510) on my Red Hat Linux 7.1 machine with a 2.4.37.9 kernel. I downloaded the serial monkey driver from the sourceforge ...
2
votes
3answers
3k views

How to detect VPN disconnection with vpnc?

What is the easiest way to detect that a vpnc connection on Linux/Ubuntu has disconnected? Manually, I think the way to detect is to check whether the interface (tun0) appears in /sbin/ifconfig ...