a command from Linux POSIX operating system able to give information about the IP network.

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23
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3answers
17k views

Can someone please explain ifconfig output in Mac OS X?

When I do ifconfig on my Mac, I get a list of the following interfaces: lo0 gif0 stf0 en0 fw0 en1 vmnet8 vmnet1 I wonder what each interface is. Also, which of these is the IP interface ? I don't ...
0
votes
1answer
19 views

wlan1 showing as weird characters

When I do ifconfig, it shows wlan1 as wlanx00c0ca8476b6 What in the world is this gibberish? Note: This is showing up for my usb wifi adapter. My internal wlan0 shows up fine. Note: I did an ...
1
vote
0answers
16 views

iwconfig wlanX channel … - SET fails due to device being busy

I'm using a Debian Jessie on a Sony Vaio VPCEB3M1E. Some information about my wireless card: :~$ sudo ifconfig wlan0 IEEE 802.11bgn ESSID:"********" Mode:Managed Frequency:2.412 GHz Access ...
1
vote
1answer
5k views

How do I use a single wireless adapter for both an access point and client on raspberry pi?

I have been able to create a wireless access point (on my raspberry pi) using a usb wifi dongle using hostapd on wlan0. What I would like to be able to do is have the access point be on some virtual ...
1
vote
0answers
32 views

How can I set up my ethernet on a fresh install of Fedora Server 23?

I am using Fedora Server 23, and cannot get my ethernet connection to work. It works fine on Ubunutu, OS X, and Windows 7 on the same machine. [root@localhost etc]# ifconfig ens5: flags=4163<UP,...
0
votes
1answer
68 views

Linux + why dropping issue displayed from ifconfig but not from ethtool?

we have Linux VM red hat 7.2 version with two LAN interfaces the Linux machines are ruining on ESXi - 5.5.0 and we have very strange issue , the conflict is between the ifconfig command to ethtool ...
-1
votes
1answer
128 views

what is the difference between eth1 and eno1?

What is the difference between the network interface name ethX (e.g. eth1) and enoX (e.g. eno1), given by ifconfig or lshw ?
0
votes
1answer
23 views

Piping stdout from a command to stdin of two commands in sh

tee [using >()] command is not working because it is not supported in sh (bourne shell). What I am trying to achieve is sending the output of "ifconfig -a" to two different commands. This is my ...
1
vote
1answer
37 views

linux red-hat 7.1 version + dropped increasing from ifconfig

please advice what could be the root cause for dropped increasing problem? as the following: ( we see dropped 2201101 , and this value increased evry sec ....) on Linux red-hat 7.1 eth1: flags=...
1
vote
2answers
169 views

Can't connect to localhost on mac WebServer from other computers on same local network

When I execute ifconfig in terminal, I see under the en0 > inet > 192.168.0.10 which is my machine's ip, but when I enter it into my PC or iPhone's browser, it doesn't work, how do I connect to my ...
0
votes
0answers
35 views

No internet connection after reboot

I rebooted my vServer (Debian 8) and it doesn't came back up. Well, I used the rescue console on my server and the server seems to be running fine, except the network was broken. So I tried 'ifconfig' ...
1
vote
1answer
39 views

How do I find the SNR of an ethernet connection?

iwconfig reports the signal-to-noise ratio (SNR) of wireless connections, but how do I find the SNR for an ethernet connection? ifconfig does not report it.
0
votes
0answers
26 views

ifconfig en1 inet 4 IP address only (no netmask or broadcast address)

Is there an elegant way to get just the inet 4 IP address from ifconfig en1, i.e without the netmask and broadcast address? The only way I can get this info currently is: ifconfig en1 | grep inet | ...
1
vote
2answers
61 views

How to configure multiple subnets

I have a scenario in which one computer needs to be a member of two subnets on the same physical network - 192.168.2.0/24 and 192.168.3.0/24. I have achieved this using ifconfig eth0:1 192.168.3.123/...
2
votes
1answer
34 views

What does the “-->” notation mean in the output of ifconfig?

I have a VPN connection set up on my OS X machine, and when I run ifconfig in the terminal I get the following response: utun0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1500 inet 10....
2
votes
1answer
223 views

FreeBSD turning off offloading

How can I turn off the following in FreeBSD? tx checksum offloading rx checksum offloading tcp segment offloading large segment offloading
0
votes
3answers
166 views

ipconfig \all, not working on linux fedora

I am new to linux. I am trying to run "ifconfig" on linux fedora. It is working but when I run "ifconfig \all" or "ifconfig /flushdns",it gives me error i.e. "device not find", even if i try as super ...
1
vote
0answers
43 views

How to show all IPs of network interfaces using “ifconfig”?

I am using the Kali Linux distribution and I came across this issue that I can't solve: when I type the command ifconfig in the terminal I get the following network interface infos: As you can see ...
0
votes
1answer
148 views

Fixed ppp interface name?

I have many pptp vpn tunnels or servers to connect to and linux would assign ppp0 for the 1st connection, ppp1 for 2nd connection and so on. I need the interfaces to be fixed so i can forward the ...
1
vote
0answers
101 views

Can ping URL but cannot access via cURL or wget

I am experiencing an issue where I can ping, but I cannot use wget or curl. This is the output from these commands. I have copied a working Vagrant VM from one Win7 PC to another and this is the ...
1
vote
1answer
500 views

wlan0/wlan1 wont show up with ifconfig

I'm running linux mint (virtual machine) and wifi0/wifi1 interface simply wont show up. Wifi is working properly. I have internal wireless card (not USB or anything). Is there a problem with drivers ...
1
vote
1answer
61 views

What is the number that comes after the interface name in “ifconfig -a” output?

What are these numbers 2043, 2091, 2276, 2324 that comes after the interface name—such as eth4 in this example—when I use ifconfig -a? eth4 Link encap:Ethernet HWaddr 00:0F:53:27:81:00 ...
5
votes
4answers
6k 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?
2
votes
1answer
1k views

How to get current value of txqueuelen on Linux

I know the following command can set txqueuelen in Linux: ifconfig eth1 txqueuelen 4096 But how can I get current txqueuelen of a specific interface? I've tried ifconfig eth1 txqueuelen, it only ...
0
votes
0answers
19 views

Why are there so many network interfaces in OS X? [duplicate]

The ifconfig command prints this output: lo0 gif0 stf0 en0 en1 fw0 en2 bridge0 p2p0 vnic0 vnic1 Is it normal to have all these interfaces?
0
votes
0answers
141 views

ifconfig shows no active connection (Mac os X)

I'm running os x 10.9.1. In terminal, just ran the ifconfig command, and despite having an active internet connection via USB dongle, none of the interfaces read any inet or inet6 address (except lo0),...
4
votes
1answer
385 views

VMware vmnet2 routes collide with en0

I am getting the following error when starting a vagrant box: gajus:vagrant gajus$ vagrant up Bringing machine 'default' up with 'vmware_fusion' provider... ==> default: Checking if box '...
0
votes
1answer
359 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 ...
1
vote
1answer
224 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
0answers
98 views

IP for virtual interface gets assigned to physical interface

I'm configuring a physical NIC and a virtual interface based on it as follows in /etc/network/interfaces: auto eth0 iface eth0 inet dhcp auto eth0:1 iface eth0:1 inet manual post-up ifconfig ...
2
votes
1answer
3k views

What is creating the utun0 network interface on OSX? What is for? What is it exactly?

What is creating the utun0 network interface on OSX? What is it being used for? What is it exactly? The interface only appears after connecting to the Ethernet or turning on the Wi-Fi and goes away ...
1
vote
2answers
4k views

Trying to figure out route add to mask an IP to a router/gateway in Bash

Not even sure if I worded this correctly, but here’s what I’m trying to do roughly. Take an IP such as: 192.168.100.0 and mask it to 255.255.255.0, and set the gateway of that route to another IP ...
0
votes
0answers
39 views

Will dead network hardware still show up in Ubuntu ifconfig?

I have an Intel NUC and I suspect the onboard ethernet port died, but I'm surprised it still shows up in Ubuntu as eth0 in ifconfig. Is this behavior to be expected, or should I suspect some other ...
1
vote
1answer
121 views

Where is this IPv6 address coming from?

When I run ifconfig (after rebooting) on my FreeBSD 8.4 system it outputs this: inet6 fe80::225:90ff:fe10:7e84%em0 prefixlen 64 scopeid 0x5 inet6 xxxx:xxxx:1009::2 prefixlen 64 ...
0
votes
1answer
5k views

how to test a VLAN set up under OS X Mavericks

I tried to set up an "internal" VLAN, with my mac (running Mavericks) routing this segregated traffic to one of the hardware interfaces. I think this should work irrespective of how people connect to ...
0
votes
3answers
2k views

Assigning static IP address to Debian machine?

I don't know how to use a static IP address on a Debian machine. Can anyone help? I have the static IP address 83.222.248.100. This is what I've tried: $ cp /etc/network/interfaces /etc/network/...
1
vote
1answer
1k views

Run ifconfig without sudo

I have an embedded Linux running on a imx6 platform. This is a freescale embedded linux. The problem is that there is no sudo available for this linux, but I need to activate and deactivate the wlan0 ...
0
votes
3answers
96 views

What is the IP address of my home computer from the perspective of the outside world? [duplicate]

What is the IP address of my home computer from the perspective of the outside world? I need this in order to grant myself permissions to connect to a mysql database on a work server. I'm working on ...
1
vote
2answers
2k 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
933 views

Slackware cannot reconnect to local network

Hi guys this problem is frustrating me. After trying a lot of things to setup my wireless card, I decide to test it by shutting down LAN interface ifconfig eth0 down. Then, when I turn the LAN ...
0
votes
2answers
7k 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 ...
1
vote
1answer
3k 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.
4
votes
5answers
4k views

What cross-platform command-line tool allows me to get my external IP address?

How do I get my external IP address from the Windows and Linux command line? On Windows, ipconfig shows an internal network IP address, but it does not show the external one.
8
votes
2answers
18k views

Change IP address permanently with ifconfig in Debian

I know there are several tutorials on how to manually change IP settings. However, I have yet to find a solution that fits my needs. I need to be able to script something that changes the IP address ...
0
votes
1answer
1k views

Easy persistent network config on ubuntu server

I'm having some problems configuring a static IP on my ubuntu server. What is the easiest way to configure IP, netmask, nameserver and default gateway on eth0? I've tried modifying the /etc/network/...
1
vote
1answer
2k views

ifconfig ignores alias on IPv6

When I add an IPv4 address for the interface eth0:0 with ifconfig, it is created correctly: ifconfig eth0:0 add 192.168.10.10 This can be verified by ifconfig or "ip a". When I add an IPv6 address ...
2
votes
1answer
152 views

windows 7: assign static IP address [duplicate]

I want to connect two laptops with a crossover Ethernet cable, in order to synchronize them with ntp. One laptop runs Windows 7, the other one Ubuntu. On Ubuntu, in order to assign a static IP ...
0
votes
0answers
74 views

How to create new localhost interface in Windows?

In *unix you can write: sudo ifconfig lo0 127.0.2.1 up But how to do this command line in Windows?
1
vote
1answer
549 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 ...