Ubuntu :: Ifconfig Command - How To Get IPV4 Address

May 31, 2011

When doing the ifconfig command I only receive the IPV6 address. How do I specify that I need the IPV4 address???

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Ubuntu :: Sharing And Setting IPv4 Address?

Aug 14, 2010

I can connect & share my dual-boot PC with no problems under WinXPPro using wired or wireless. (I've another thread going trying to get the wireless-n usb adapter to work.) Two questions so I can get the wired shares to work. I want to copy beaucoup files from the Win7 PC to the dual-boot PC. When booting into XP, no problems. When booting into Ubuntu 10.04, nothing. I can see the Win7 PC but can't access it. My two questions then are these. First, is there some switch to enable fire & drive sharing under Lynx as there is under WinXP / 7? (Samba??) Second, how does one set the IPv4 address? Under WinXP it's one address and under Lynx it's another.

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General :: Size Of An IPV4 IP Address?

Nov 16, 2010

what is the size of an IPV4 IP address?

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Debian Installation :: Cannot Find IPV4 Address

Dec 17, 2015

I am setting up a server on a Intel Nuc PC. I have a problem though. I cannot get it to find a IPV4 address.

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Networking :: Duplicate Address Detection In Ipv4?

Sep 22, 2009

Linux has duplicate address detection mechanism for IPv6 and nothing for IPv4 in kernel. At boot time, initscripts take care to check for the duplicate address but when an IP address is assigned using ifconfig or ip utility, no error is generated.

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Ubuntu Servers :: Make 10.04 VM Look For An IPv4 Address If It Doesn't Seem To By Default?

Jan 5, 2011

how to make a Ubuntu 10.04 server VM look for an IPv4 address if it doesn't seem to by default?

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General :: Give Server A Fixed IPv4 Address?

Aug 2, 2010

I am new to Linux so thought it would be a good learning exercise to try and setup an FTP server using linux.I have downloaded and installed Ubuntu 10 server edition and installed vsftpd, following instructions found on here I have configured the software and I can connect from an FTP client on my windows PC across the internal LAN.I have a couple of questions if I may:

1) a post on this forum suggests that local users can access the FTP server if the correct line is enabled in vsftpd.conf - I have done this and the fact that I can access it shows this is working I would think, however users added subsequently with the useradd command cannot access the server. Filezilla shows a could not connect to server error.

2) how do I give the server a fixed IPv4 address? It is currently using DHCP

3) I need to be able to put files into users folders for them to access offsite, but I don't want them to see each others filesfolders, can I do this?

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Server :: Failure In Name Resolution - Unable To Find IPV4 Address

Jan 29, 2010

I just installed Fedora core 11 and am trying to get httpd to start, but it gives me a [failed] message. When I run it with -e DEBUG, I get an error message like: "failure in name resolution, unable to find IPv4 address of 'uaserver'" In the httpd.conf I have my hostName set to localhost.

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Software :: Apache Won't Start (Gentoo): Could Not Find IPv4 Address

Jul 23, 2011

I installed it the standard way using emerge/portage, but it fails to start:


alpha skyer # /etc/init.d/apache2 start
* Caching service dependencies ... [ ok ]
* Starting apache2 ...
apache2: apr_sockaddr_info_get() failed for alpha
apache2: Could not reliably determine the server's fully qualified domain name, using for ServerName [ !! ]
* ERROR: apache2 failed to start

I'm used to have Apache unable to find pc's FQDN, as I don't set it, and it works without it.

From /var/log/apache2/error.log


[Sat Jul 23 06:41:12 2011] [alert] (EAI 2)Name or service not known: mod_unique_id: unable to find IPv4 address of "alpha"

Computer has IPv4 address set. I suspect that the nature of the problem is in the fact, that alpha has two network interfaces (it is used as router also). I've checked Apache conf files, but didn't find any meaningful directives to set interface or something similar.

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General :: Application Besides Ifconfig To Change MAC Address?

Aug 13, 2011

I have to change my MAC address in order to get an IP lease via DHCP. But almost no installer CDs have ifconfig and dhclient.

ifconfig eth0 down
ifconfig eth0 hw ether 00:22:15:C0:27:23
ifconfig eth0 up
dhclient eth0

Is there any way to change a MAC address within Debian or Ubuntu installer CDs?

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Networking :: Ifconfig Address With A Port Number?

Sep 24, 2010

I'm trying to grok a problem I'm having with an embedded machine. I'm pretty sure I can track down the larger problem, but I came across a usage of ifconfig that I don't understand, and I'm pretty sure this is the command that is failing.

The command is: ifconfig eth0

I understand how ifconfig works. What I don't understand is the :9134. I can't see anything in the docs about what this means. I know in most contexts it's a port number, but what does it do when bringing up a network interface? Does it limit it to only using port 9134?

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Programming :: Finding IP Address: Nslookup Or Ifconfig

Oct 14, 2010

I am trying to find IP address. In a socket programming tutorial, I found :

$ nslookup localhost
command. It gives me a address. However, one colleague told me :

$ ifconfig

It also returns me inet_addr. But both are different. Kindly tell me the correct method to find IP address? I have also checked the /etc/hosts file but it says "localhost"

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General :: Get IP Address / Ifconfig And Ip Addr Show Are Not Working

Apr 23, 2010

This should be simple, but the machines we ssh into don't seem to have the regular commands.Are there any other simple ways I can use to get my IP?

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General :: Ifconfig Alias Address Assigned By DHCP

Aug 13, 2010

I would like to create several aliases to eth0, but have the addresses assigned by DHCP instead of being set to static IP's. Is this even possible? All the examples I've seen assign a static IP using the command:
ifconfig eth0:0 up

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Red Hat :: Disabling IPv4 Packet Forwarding: Net.ipv4.ip_forward = 0 (CentOS 5.5)?

Oct 29, 2010

I'm forging a gateway server, We have 2 Internet connection that goes to a load balancer router, and goes to my centos server and from our server goes to a switch for Internet distribution or routing.

OS-CentOS 5.5
[root@server etc]# uname -srio
Linux 2.6.18-194.el5 i386 GNU/Linux

My eth0 and eth1 has the following configuration and IP

[root@server etc]# cat /etc/sysconfig/network-scripts/ifcfg-eth0
# VIA Technologies, Inc. VT6105/VT6106S [Rhine-III]


Disabling IPv4 packet forwarding but i already changed it to 1 at sysctl.conf One of the online forum says i need to configure the named.conf deleted some and run it(named.conf) and successful but still when I run network service I still get the :"Disabling IPv4 packet forwarding: net.ipv4.ip_forward = 0" The network is getting the IP range but it doesnt get any Internet connection.

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Ubuntu :: Integrated Ethernet Card Died - IP Address Registering Under Ifconfig

Jul 7, 2011

it was working but after i installed updates and rebooted it could not get a ip address seems like strange timing it still registers under ifconfig it is not even working on the live usb anyway i can test to be sure it is the chip?

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General :: IP Address Lookup - Where Are The Interface Configurations (set By Ifconfig, Not The Static Ones) Stored

Jan 28, 2011

where are the interface configurations (set by ifconfig, not the static ones) stored? I'm asking because I'm trying to understand, more broadly, the order of IP address lookup. If I ping the local machine (localhost, or one of the interfaces) no messages get sent out (at least according to wireshark), so some local lookup must be taking place.

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Ubuntu Networking :: Automate Ifconfig Command?

Nov 8, 2010

I manage to get Ethernet over Firewire working between my Windows XP desktop and my Ubuntu 10.10 laptop.However, I am getting tired of having to manually issue the ifconfig command every time.How can I automate it so that the command is done at bootup?

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SUSE :: Open - What Command To Use In Place Of Ifconfig

Jun 11, 2010

I come from ubuntu were ifconfig is used to check my ip address and nic cards on my computer. I have openSuSE 11.2 on acer aspire 5515.

When I run the command I get:

So what command do I use in place of ifconfig.

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OpenSUSE Wireless :: Wlan0 Not Shown In Ifconfig Command?

Feb 20, 2011

I have suse 11.3 tried to get wireless to workI issued command ifconfig and wlan0 not shown. One replier suggested that I need to get this working

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General :: Ip Of The Box - Logged Into Sometimes - Bash: Ifconfig: Command Not Found

Aug 23, 2010

I am usually sshed into different boxes and i forgot what ip I am logged into sometimes. Is there a command I can type to give me the ip on the box I am on.

cat /etc/*release
CentOS release 5 (Final)

this failed

ifconfig | more
bash: ifconfig: command not found

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Programming :: Pass Ip Address, Port Address And Some Parameters From Command Line?

Apr 1, 2011

I want to pass ip address,port address and some parameters from command line using python script.The ip address and port address for establishing socket connection and remaining parameters to execute different connection.

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Ubuntu Servers :: Command That Lists All Ip Address?

Jan 18, 2011

I have a bunch of windows machines connected to a server running samba. I would like to know if there's a way or hopefully a quick command I could type in the terminal that would tell me the machine name and the associated IP address?

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OpenSUSE :: Change From Address With Mail Command

Dec 5, 2010

Despite what the man page says, and what I have read out on the web, I cannot get the mail command to let me change the "from address"
I have tried to change the reply address (-R my@address.com)
I have tried to change the from address (-f my@address.com)
..... and so on
Anyone have any luck, from the command line (as I am setting up cron jobs) in changing the "from" address?
echo test | mail -s "This is a test" user@domain.com (this is the basic command I wish to use, but change the "from address")

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General :: Finding IP Address Using Command Prompt?

Apr 4, 2010

I'm looking for a way to get my IP address using the command prompt in Linux. I know when you type "ifconfig" you can get your local IP address (i.e., but I'm looking for my IP address that I get from my ISP. How can I get this from Linux without having to visit some website?

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Red Hat / Fedora :: Command To Find Hardware Address?

Jul 22, 2010

I need the command to find the HARDWARE ADDRESS.

I know ifconfig command gives the details.. but I just need the HWADDR that is only numbers eg.

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General :: Finding Mac Address With Tcpdump Command?

Dec 10, 2009

when i send any packet to anu destination and want to see he mac address of source and destination i am using the command tcpdump -qec1 but rather then getting the mac address of source and destination each time i am getting mac address of the system which is broadcasting. will anybody tell me how can i get source and destination mac address even if any other packet is also being broadcast to my network.

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Networking :: What Is Command To Show Host Name Of Ip Address?

May 25, 2010

What is the command to show the host name of the ip address?Suppose, I've an ip address like, now I want to know its host name.What is the command for that?

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General :: Assign IP Address Using Command Line?

Mar 26, 2010

I am using internet in my home PC using Red Hat 9. To assign static IP to my linux machine I use "System Settings....> Network" and then double click on "eth0" to assign the static IP.Well these all settings by using GUI interface.Kindly guide me that if I use only command line interface "runlevel 1" then in that case which file should i edit and assign my static IP,Subnet Mask,Default Gateway DNS settings.2- 2nd thing is,is there any way that I may open web broswer in command line? or the administrator should only use internet on Run Level 5 ?

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Software :: Need Command To Show Host Name / IP Address

Jun 16, 2010

I need a command that can show me the HOST-NAME as well as ip-address in a single stress.

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