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

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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 ...
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1answer
1k 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 ...
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1answer
76 views

ifconfig, ethernet device name too long and get truncated, how do I know the actual name?

I'm trying openSUSE 13.1 x86, but immediately encounter an annoying problem. In this openSUSE version, compared to 12.2, ifconfig does not show network device name as eth0, eth1 etc, but use a ...
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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 ...
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2answers
60 views

ifconfig command on mac does not show IP address

When I run ifconfig, eth0 is not shown, and only en0 is displayed: >> ifconfig en0 | grep inet inet 192.168.0.102 netmask 0xffffff00 broadcast 192.168.0.255 When I type My IP in Google, my IP ...
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3answers
382 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 ...
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0answers
879 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 ...
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2answers
107 views

Concise IP information in OS X Terminal

Is there a command for the OS X Terminal that shows you only the most vital IP configuration information about your machine? I know there is "ifconfig" but that brings up a bunch of (in most cases) ...
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2answers
240 views

Enabling eth0 or eth1 for internal network in computer without internet access

I am installing virtual box in computer without internet access. I am not sure this computer has network adapter (Ethernet) or not. I have two virtual machine which can communicate each other (I ...
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2answers
208 views

How to set txqueuelen on Mac OS X

How can I set the transmit queue length for a network interface on Mac OSX? On linux the command would be ifconfig en0 txqueuelen 5 but OSX doesn't recognize txqueuelen as a valid option. Where ...
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1answer
98 views

CE interface in Solaris 10 drops mac address (per ifconfig)

I recently installed Solaris 10 1/13 and proprietary TCP PEP software on a new hard drive within an old Sun v210. When the PEP software starts, the Sun's CE0 interface loses its "ether" address, ...
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1answer
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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 ...
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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 ...
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2answers
382 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 ...
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3answers
17k views

Spoof MAC address from IP command

I'm trying to spoof my MAC address on a modified version of Linux (Android). The main problem is that because it has been stripped down, the ifconfig command has been taken out, and I only can use the ...
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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 - ...
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1answer
169 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 ...
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88 views

VMware Fusion 5 Ignoring dhcpd.conf

I'm trying to set a static IP for my CentOS 6.4 VM that I'm running via VMware Fusion 5. Steps I took: ran ifconfig, copied HWaddr shut down VM. added to the end of /Library/Preferences/VMware\ ...
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0answers
76 views

Custom scripting between grub2 sessions - chainloading

I'd like to use grub2 for changing MAC address for eth0 before booting into the main OS. I wonder how can this be done.. I have learned about chainloading, so 1 can choose a boot entry and have it ...
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0answers
284 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 ...
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1answer
415 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 ...
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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 ...
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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 ...
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1answer
90 views

What are ifconfig.me/forwarded IP addreses?

When I use the ifconfig.me service, by running the following command: $> curl ifconfig.me/forwarded I returns a list of IP addresses. does anyone know what this IP addresses are. I am behind a ...
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2answers
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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 ...
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2answers
5k views

How do you change your Airport or Ethernet MAC address in Mac OS X 10.6?

I have a MacBook Pro and would like to set a custom MAC address for either my Airport WiFi card, or Ethernet port. In older versions of Mac OS X, you could do it like this: $ sudo ifconfig en0 ether ...
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1answer
5k views

How does Mac OSX prioritize network interfaces when routing?

To give a concrete example, how does OSX choose which of these default entries from netstat -nr to route to? Destination Gateway Flags Refs Use Netif Expire 0/1 ...
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1answer
797 views

How to set NIC in promiscuous mode on mac book air?

I am trying to run my nic on MacOSx at promiscuous mode and then use tshark / tcpdump Option1: ifconfig en0 promisc but I get this message: ifconfig: promisc: bad value Option 2: I tried sudo ...
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1answer
252 views

curl ifconfig.me and ifconfig showing different results

If I run curl ifconfig.me I get one IP, and if I run ifconfig, I get other IP's. Why is it so ?
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1answer
2k views

How to run 'ifconfig wlan0 down/up' with a comm user?

I need to run ifconfig wlan0 down and ifconfig wlan0 up with my common user. How can I perform this?
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2answers
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change IP address permanently with ifconfig in debian

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

Configure the Ethernet Interface from the Command Line

I have connected to a Virtual Server with an SSH client using IP address: 172.xx.xx.154/22 I have been asked to configure eth1 to 172.xx.xx.155/24 with gateway IP Address of: 172.xx.xx.1 Any help ...
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1answer
566 views

ifconfig - who decided that MAC address should be lowercase?

On some Linux computers, ifconfig displays the MAC address ("HWaddr") hex digits in uppercase. On other Linux computers, the [a-f] digits are lowercase. Why the difference? Are there two competing ...
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1answer
117 views

ip address seen in ifconfig in os x which is not present in network setting

I have a macbook and some while back I must have assigned it an ip address of 192.168.2.1 on the ethernet interface. The problem is that the ip is still seen even when I have removed it from the ...
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1answer
299 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 ...
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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.
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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?
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2answers
7k views

How to see network traffic per interface in FreeBSD?

want to see an amount of traffic passed through interface since boot. It's an ISPManager VDS with FreeBSD 8.0, and ifconfig -L epair521b -B does nothing. Want to have output like Linux's ifconfig: ...
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1answer
464 views

2 NICs conflicts on Windows 7 together

I have 2 NIC's on my computer. I have connected one with a GigE camera and the other to a switch which in turn connects it to a video server. If only one device (i.e., GigE camera or video server) is ...
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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
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1answer
1k 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 ...
0
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1answer
135 views

How can i set my vm to have exclusive access to my ethernet port in mac os x lion?

I have a vmware of windows 7 on osx lion. I am on a corporate network that assigns IPs via DHCP through ethernet, and i also have an airport card thats connected to a 4g hotspot. This corporate ...
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0answers
659 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 ...
2
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0answers
247 views

Script to join WPA2 Enterprise wifi

When I head to work with my MBP running OSX 10.7, I have to go through this series: Join Other Network Enter SSID select Security = WPA2 Enterprise generate a pw via my RSA soft token Join ...
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1answer
726 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 ...
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4answers
274 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 ...
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2answers
871 views

How to remove redundant inet from ifconfig in Mac OS

Lately I have assigned the en3 interface (which is in reality a USB-Ethernet converter device) the IP address of 192.168.2.1 I did this for Internet Sharing, i.e. to share the Ethernet (en0) with ...
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5answers
3k 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.
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1answer
540 views

why do I get a different MAC address using arp and ifconfig?

# ifconfig eth1 Link encap:Ethernet HWaddr 00:1e:8c:10:xx:xx # arp Address HWtype HWaddress Flags Mask Iface 192.xxx.x.x ether ...
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2answers
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 ...