Fedora Networking :: Dhclient Cannot Find Interfaces

Sep 29, 2010

I am running Fedora 13 and after my machine is booted my ethernet interface eth0 does not have an IP address. Running


At the terminal does not work, and I can see that in /var/log/messages I have the following error:


I assume that the same command was attempted during the boot process (please correct me if I am wrong) to use DHCP to get an address for eth0, but failed for the same reason it is failing after boot when I run it manually, whatever that reason may be.

I noted, however, that eth0 IS in broadcast mode:


I also noted that running


Does in fact work and will run DHCP and configure eth0 with an ip address.

It is quite mysterious to me why running 'dhclient eth0' will work, but manually running 'dhclient' does not.

View 5 Replies


Fedora Networking :: Enable 3 Interfaces \ When Start One Interface The Another Interfaces Goes Down?

Jan 25, 2010

I have 3 Interfaces for a different LAN's and when I start one interface the another interfaces goes down.How can it's possible?I configure my ethernets as:

/sbin/ifconfig eth0 netmask broadcast
/sbin/ifconfig eth1 netmask broadcast
/sbin/ifconfig eth2 netmask broadcast

View 12 Replies View Related

Fedora Networking :: F12 Full Crash Possibly From Dhclient?

Apr 1, 2010

I got a full system crash each time I try to do anything with network. Been fighting with this problem for weeks now. What I did: -tried every driver for broadcom4312 and it turned out that it even crashes with cable net

-got rid of networkmanager
Mar 11 08:01:43 geburah NetworkManager: <info> Activation (eth1) successful, device activated.
Mar 11 08:01:43 geburah NetworkManager: <info> Activation (eth1) Stage 5 of 5 (IP Configure Commit) complete.
ifconfig eth1 up


View 2 Replies View Related

Fedora Networking :: Dhclient Wlan0 - After Logoff Network Is Gone

Apr 30, 2010


Commands as root works well when normal user is logged in and connected to net via KDE 4 network manager, but after logoff network is gone. And it is impossible to get it back because command mentioned above stops working!

View 4 Replies View Related

Fedora Networking :: Dhclient-script Gives Router Address ?

Jul 7, 2011

I have just installled fedora, and I am puzzled by dhclient-script. Because it gives the router ip as nameserver I have had other linux distro on same machine that resolves the correct nameserver without any configuring.

Does anyone know how to get your ISP:s nameservers instead in /etc/resolv.conf when running dhclient from CLI? I have thought about edit /sbin/dhclient-script. But if that is the case. Which option should I edit?


My system
OS=Fedora 15
Kernel=Linux fedora_15 #1 SMP Mon Jun 13 19:55:27 UTC 2011 i686 i686 i386 GNU/Linux
Router =DLINK dir 100 (IP

View 5 Replies View Related

Fedora :: Find Out What Auto Loaders And Interfaces (SCSI Or SAS) Are Supported?

Jan 27, 2010

I work for a SUN resller in South Africa, I have recieved a request from a customer for a autoloader with LTO3 or 4 drives. Where can I find out what auto loaders and interfaces (SCSI or SAS) are supported.

View 1 Replies View Related

Ubuntu Networking :: ADVISEADDR: Error In Specifying Interfaces: No Existing Ip Interfaces Found

Jan 7, 2010

I have a weird issue that I have not seen on any forum. My jaunty on DELL studio laptop seems connected to net, but I can not access any network service (ssh, firefox etc.). But when I connect a cable the cable lights blink as it should be and in wireless connection my wifi light blinks.

It was working 2 days ago without problem, and I have not done big changes recently.I removed and reinstalled network-manager and network-manager-gnome. Nothing changed. I see a message in each restart as follows (when Openafs is starting). I can reproduce it with "/etc/init.d/openafs-client restart"


ADVISEADDR:error in specifying interfaces: no existing ip interfaces found



04:00.0 Network controller: Intel Corporation Wireless WiFi Link 5100
08:00.0 Ethernet controller: Broadcom Corporation NetLink BCM5784M Gigabit Ethernet PCIe (rev 10)
#lshw -c network


View 5 Replies View Related

Ubuntu Networking :: Adding Interfaces To /etc/network/interfaces?

Apr 16, 2010

If I try to add a new interface (eth1) to /etc/network/interfaces, I get

* Reconfiguring network interfaces... SIOCSIFADDR: No such device
eth1: ERROR while getting interface flags: No such device
SIOCSIFNETMASK: No such device


How do I add 2 interfaces and get anyone of them to work, as available ?

View 5 Replies View Related

Fedora Networking :: What Happens With Multiple Network Interfaces

Apr 30, 2009

What traffic goes where? Why? Any bandwidth advantage? What if one goes down?

View 4 Replies View Related

Fedora Networking :: Two NIC One Machine / Way To Get Two Interfaces To Work Together?

Mar 24, 2011

- eth0 is connected to a 'Green" interface of a smoothwall router.
- eth1 is connected to a 'Orange' interface of the same smoothwall router.

The smoothwall router is setup to forward port 80 to the address of the eth1. I can ping eth1 from the smoothwall router so there is that connection.I have a web server running on port 80 and I have opened port 80 in the firewall and made eth1 a trusted interface.In this configuration, when accessing the outside world all the traffic goes through eth0 and DNS is snappy and faster. The problem is that anyone outside can not access the web server with a timeout error.If I disable eth0 and set DNS info on eth1( DNS servers are the QWest IPs ), people can access the web server, but DNS is very poor often taking more than a minute for a look up.Is there any way to get the two interfaces to work together?

View 3 Replies View Related

Fedora Networking :: Change Network Interfaces Names?

Dec 11, 2009

I found problem in FC 12 release. I installed fc 12 to server (earlier there was FC 7). Then as always i realised that names of interfaces (eth0, eth1, eth2 .... eth9) changed after install. eth0 became eth9, eth1 became eth5 ... Earlier on previous fedora releases i solved this problem correcting HWADDR in ifcfg-eth files, so i linked MAC addresses to names (eth0, eth1, eth2) as i wanted in a right order. Now I can't do this. After correcting these files and restarting network sevice i constantly get a message: device ... has different mac than expected. I looked ifup-eth file and compare it with the same one in fedora 7. And i found that in fedora 7 there is function rename_device which processes if HWADDR value doen't coincide with real mac address value. See code:

# remap, if the device is bound with a MAC address and not the right device num
# bail out, if the MAC does not fit
if [ -n "${HWADDR}" ]; then
if [ "${FOUNDMACADDR}" != "${HWADDR}" ]; then
curdev=`get_device_by_hwaddr ${HWADDR}`
if [ -n "$curdev" ]; then
rename_device "${REALDEVICE}" "${HWADDR}" "${curdev}" || {
echo $"Device ${DEVICE} has different MAC address than expected, ignoring."

But in fc 12 release there is no function rename_device!!!!!!!!! So in this case if HWADDR value is not the same as FOUNDMACADDR value (which equal to REALDEVICE mac address) i just get an error message So I can't change interfaces names, as result i can't organize right order of network interfaces as it was earlier on fc7.

View 1 Replies View Related

Fedora Networking :: Two Network Interfaces - Setup Default Gw Route?

Mar 26, 2009

So I have two network Interfaces

eth0 - NAT behind a router
eth1 - Public IP

When ever I restart the machine, both interfaces pull a IP, but the it randomly chooses eth0 or eth1 to have the gateway. I want the gateway to be eth0 always.


Is there some file or setting I can modify in Fedora10 that will always choose on eth0 as the default gateway?

View 2 Replies View Related

Fedora Networking :: Set Up Multiple Virt Interfaces In Network-scripts?

May 15, 2009

if I want to do eth1, eth1:0, eth1:1 etc and automatically configure them at startup where do I put that in the network-scripts?

View 2 Replies View Related

Fedora Networking :: F11 - Service Network Restart Does Not Bring Up All Interfaces

Jun 23, 2009

If I restart the network service, not all interfaces come back up. Is this expected behaviour or does something need a kick?

[root@@aspire3500 ~]$ service network restart
Shutting down interface eth0: [ OK ]
Shutting down interface wlan0: [ OK ]
Shutting down loopback interface: [ OK ]
Bringing up loopback interface: [ OK ]
[root@@aspire3500 ~]$

View 3 Replies View Related

Fedora Networking :: VLAN Do Not Work Over Bonded Or Bridged Interfaces

Aug 20, 2011

I'm having trouble getting Fedora 15 to work with my em/bond/br configuration as it did in Fedora 14. I've got a bonding interface over em1 and em2, and then individual bond vlans (bond0.2, bond0.10, etc...), I then have a similarly named bridge interface (br0.2, br0.10, etc...) for kvm. Regardless of if I assign bond0.2 or br0.2 the IP address, I am unable to ping the gateway, but the native untagged VLAN (bond0, br0) has no issue at all.

To try to isolate this issue down to the switch or Fedora 15, I went with a plain em setup and configured em1, and em1.2 which works as expected. This issue has been plaguing me since Fedora 15 came out and I'm about to trash it and go back to Fedora 14 (Which didn't have this issue), but some of the new kvm features have kept me trying to get over this incomprehensible hump.

View 1 Replies View Related

General :: Find Out Which Interfaces Use Dhcp?

Aug 30, 2010

This may be a very basic question but I was wondering if there is a way through the command line to find out which interfaces are using dhcp. I'm using Ubuntu 9.10 in case that makes a difference.

View 6 Replies View Related

Networking :: Dhclient Eth0 Up - No Such Device ?

Jan 31, 2011

While i am configuring network setting on backtrack4. i was running my backtrack on vmware workstation and NAT is bridged to physical mem like it was said on the tutorial that watched. i typed ifconfig eth0 up, and hit enter, as well as dhclient eth0 up, but resulted in different output. it says "no such device" is written and i would like to configre this problem.

View 2 Replies View Related

Fedora Networking :: File For The Menubar Sistem->Administration->Control Net Interfaces?

Jun 17, 2009

Wich is the file for the menubar Sistem->Administration->Control Net Interfaces(I think this is the translation)
sorry if it doesn't.

View 1 Replies View Related

Ubuntu Networking :: Set Dhclient To Autorun At Boot?

Jan 21, 2010

Had a problem getting my internet connection working with Ubuntu, but I resolved that issue. Problem is I still have to manually run dhclient every time Ubuntu boots, because I have no network unless I do. Is there a script or something that can do this automatically?

View 1 Replies View Related

Networking :: Daemon.info Dhclient Error

Jul 11, 2011

I am seeing the following error on a linux client..

daemon.info dhclient: No working leases in persistent database - sleeping

is this a problem within the client or related to interaction with DHCP server?

View 1 Replies View Related

Ubuntu Networking :: Automate A Dhclient Call At Startup?

Nov 28, 2010

For test purposes I'm running Ubuntu 10.10 from a USB stick with a USB WLAN stick.The system finds the WLAN router and acquires an IP6 address, but no IP4 address.With "dhclient wlan0" though it does get an IP4 address and connects o.k.How do I setup the system so that this dhclient call is done by the system at startup (or whenever it is necessary)?

View 1 Replies View Related

Networking :: Dhclient Running On Disconnected Ethernet Port?

Nov 8, 2010

I have a simple server running Ubuntu Server. Usually the server connects to the network by Wifi, so there is usually no cable connected to the Ethernet port. I noticed that there is a dhclient3 running on eth0 anyway. It is causing undesirable disk activity. Obviously, it is never going to get a response as long as no cable is connected. I can kill the responsible process manually, but I wonder first what is starting the process and how I can prevent it from being started. If there is a way to get the server to boot without starting this process, I wonder whether this is the right solution. Connecting to the network by Ethernet is the failsafe when Wifi doesn't work. I guess what I would like to see would be a way for the server to detect when eth0 does not have a cable connected and not start dhclient in that case, but to activate dhclient when a cable is connected.

View 4 Replies View Related

Networking :: Disable Dhclient From Running On Rhel Release 6?

May 26, 2011

i've configured the machine to use a static ip yet dhclient still runs and obtains an ip. what needs to be done to stop this? it has to be something i can put in a script since i have written a setup script to run on several machines. this setup script creates/modifies several files with a few key ones shown below:





and the files, hosts, resolv.conf, network and ifcfg-eth0 in the /etc/sysconfig/networking/profiles/default directory all link to their respective files as does /etc/sysconfig/networking/devices/ifcfg-eth0. thanx!

View 1 Replies View Related

CentOS 5 Networking :: Dhclient Can't Get Default Gw On VLAN Interface

Jan 13, 2011

I have the following system

# cat /etc/redhat-release
CentOS release 5.5 (Final)
# uname -r

View 1 Replies View Related

Networking :: Ubuntu 10.04.2 - Dhclient And NetworkManager - Eth0 Connection Lost

Feb 24, 2011

I'm running Ubuntu 10.04.2 LTS and from time to time eth0 connection is lost.

Looking at syslog (below), if its a hardware (network card) problem or a software bug?

syslog file:

View 4 Replies View Related

CentOS 5 Networking :: Running A Command When Dhclient Renew Leases

Mar 11, 2010

I have a dynamic Internet connection. My eth0 is configured to DHCP client. I need to rum one personalized command all time the dhclient renew the lease. I have a program that update the /etc/hosts with the new IP and I need to run this command when dhclient receive one lease update.

View 1 Replies View Related

Red Hat / Fedora :: How To Disable Dhclient On Host

May 24, 2010

How to disable dhclient on redhat host.

I have set static IP to one of my redhat host but I don't know how it changes to some other IP after few hours.

Here is the output from ifcfg-eth0 and rc.local


View 4 Replies View Related

Red Hat / Fedora :: Ssh No Route To Host After Running Dhclient

Jan 5, 2010

I used ssh to log into my sever that I had and I from there I ran the command dhclient eth by mistake on the server but the serve had an static IP address. Unfortunately I can't ssh back into the server anymore! It replies back with No route not host. Now my questions are. First of all how do I change it back into the previous setting? Secondly, can I do this remotely since the server is in another place and I don't have access to it right now or do I have to go there and sit behind it and play around with it there?

View 4 Replies View Related

Fedora Installation :: FC11 - Dhclient Doesn't Work

Jun 22, 2009

On my PC (fresh FC11 i386 instllataion from CDs), dhclient doesn't work. When it tries to get an IP address with dhclient, it gets No DHCPOFFERS reveived and fails. The ethernet of my PC works fine - I can manually set IP address, netmask, gateway etc. to connect to my persoal Linksys router, but if I change to DHCP, it fails as above. So it's not the problem of the ethernet driver of FC11. I suspect that dhclient of FC11 is buggy. (For the record, DHCP works fine on FC10 and Windows XP with my Linksys router.)

View 1 Replies View Related

Fedora Installation :: DHCP Conflicts With DHClient Package

Feb 24, 2010

I am trying to install dhcp server on F12 with yum, but at the time I issue yum install dhcp, I got the following message:

Transaction Summary:
Install 1 Package(s)
Upgrade 0 Package(s)

Total size: 821 k
Is this ok [y/N]: y
Downloading Packages:
Running rpm_check_debug
Running Transaction Test
Finished Transaction Test

Transaction Check Error:
file /usr/share/man/man5/dhcp-eval.5.gz from install of dhcp-12:4.1.1-5.fc12.i686 conflicts with file from package dhclient-12:4.1.0p1-17.fc12.i686
file /usr/share/man/man5/dhcp-options.5.gz from install of dhcp-12:4.1.1-5.fc12.i686 conflicts with file from package dhclient-12:4.1.0p1-17.fc12.i686

And I see that if I uninstall the dhclient package, I will lose my networkmanager, which I also need, is there a way to have a dhcp server as well as dhclient utility on fedora as it is possible on rhel?

View 1 Replies View Related

Copyrights 2005-15 www.BigResource.com, All rights reserved