after a yum update on my CentOS 5.3 I got this error when shutting down eth0 on reboot...
Shutting down interace eth0: Device eth0 has MAC address XXX instead of configured address XXX ignoring [FAILED]
I am trying to perform VM cloning using KVM in a centos 5.6 machines. I copy the memory contents of a running vm to an external state file and try to use that to start another VM in a different machine. While starting the cloned VM I provide a different mac address but once it resumes it has the old one . I tried changing the mac address in ifcfg-eth0 but I get the error: Device eth0 has a mac address xx:xx instead of configured xx:xx.Ignoring .
Is there some way to change the ip/mac of the cloned vm without the need to restart the VM ( Then the purpose of cloning will be defeated). Thanks a lot for the info.
i install kernel rpm after i boot that kernel network not working kernel name : kernel-rt-trace-2.6.24.7-132.el5.centos.i686 [URL] error "Bringing up interface eth0: Device eth0 has different MAC address than expected, ignoring."
View 1 Replies View RelatedI added an init script numbered just before bind9 starts, which needs to see the ipv6 link-local address on eth0. Sometimes this address is not configured, yet. In all cases it eventually is configured.
I am unable to find any script that is configuring the ipv6 link-local address (which is in part based on the MAC address). Does anyone know if there is some script or program that is supposed to be doing this, or is it an internal kernel function?
One workaround I am considering is making this init script go into a loop around sleep 1 to keep checking for the ipv6 address. But I'm concerned this might cause some problems. Any suggestions? I don't want to let it move on to start bind9 until the configuration this script does (more ipv6 addresses) is done.
This is on Ubuntu 9.10 server (for which there is not a prefix choice).
Version 10.04 LTS. Installed desktop version and network worked but I needed a static IP address and the install configures for a DHCP configured address. I tried changing to static address using the System->Preferences->Network Connections application but was unable to get the system to come up with the network up.
So I manually modified the /etc/network/interfaces and the /etc/resolv.conf files. I restart the system but when I do an ifconfig, I don't see a configured IP address on eth0 (only the loopback address). If I run /sbin/ifup eth0 everything then works fine and ifconfig shows the correct address bound to eth0.
My files are as follows:
New to CentOS5.5 I'm experiencing some trouble in order to continue my configuration. I've just installed my vmware tools and configured my network card with system-config-network
Edit eth0 (eth0) - vmxnet3 -> with a static IP I rebooted my server and since then I lost my eth0. I still see it in system-config-network, but I can't active it anymore.:
/etc/init.d/network start Bringing up interface eth0: Device eth0 has different MAC address than expected, ignoring. [FAILED]
Everything worked fine until very recently, and without apparently ANY change to the settings on the server, a secondary IP that was assigned to my server won't work anymore..Any IP attached to the same server works fine.. So in my case, the problematic IP is 213.8.155.67. The other IP (213.8.155.42) works without any problem.How would I go about troubleshooting this?
ifconfig:
eth0 Link encap:Ethernet HWaddr 00:26:B9:44:11:3A
inet addr:213.8.155.33 Bcast:213.8.155.127 Mask:255.255.255.128
inet6 addr: fe80::226:b9ff:fe44:113a/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
[code]...
I installed the Centos 5.5 and after the Xen. After I put a virtual machine named VM01.Initially it worked properly, I tried everything and it worked.When rebooted, I had problems with the network.I have two network cards eth0 and eth1, but eth1 does not have any ip and I use only eth0.The error that appears is:
vif0.0: received packet with own address the source address
After upgrading centos from 5.3 to 5.4 I have had this error when trying to restart apache:
[root@server1 conf]# apachectl stop
httpd (no pid file) not running
[root@server1 conf]# apachectl start
(98)Address already in use: make_sock: could not bind to address [::]:80
[code]....
I did the following to resolve:
fuser -k -n tcp 80
Then I restarted apache just fine.
I have an old Suse 8 installation on a vmware-host, where I had to change ip-addresses. Now something isn't working as it shouldn't:
- Proftpd isn't recognizing the old pw's (coming from a my-sql db)
I am not a real expert on linux, where is the address "192.168.1.37" configured on my machine? The Mysql daemon is running on this IP.
I can ping it: Code: web10:~ # ping 192.168.1.37
PING 192.168.1.37 (192.168.1.37) from 192.168.1.37 : 56(84) bytes of data.
64 bytes from 192.168.1.37: icmp_seq=1 ttl=64 time=0.024 ms
64 bytes from 192.168.1.37: icmp_seq=2 ttl=64 time=0.023 ms ifconfig result:
Code: web10:~ # ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:0C:29:79:47:DF
inet addr:88.198.100.35 Bcast:88.198.100.39 Mask:255.255.255.248
inet6 addr: fe80::20c:29ff:fe79:47df/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:563 errors:0 dropped:0 overruns:0 frame:
TX packets:272 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:58845 (57.4 Kb) TX bytes:23467 (22.9 Kb)
Interrupt:19 Base address:0x2024
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:63 errors:0 dropped:0 overruns:0 frame:0
TX packets:63 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:5807 (5.6 Kb) TX bytes:5807 (5.6 Kb)
sit0 Link encap:IPv6-in-IPv4
NOARP MTU:1480 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
route: Code: web10:~ # route -n
Kernel IP routing table ....
Where else the IP 192.168.1.37 is configured?
I have configured loopback IP address on my server as (10.10.10.10). My LAN card physical IP address is 10.10.10.20. I dont want my loopback IP address to broadcast the IP & arp. How can i achieve it? Right now i see the problem that both 10.10.10.10 & 10.10.10.20 ip address is broadcasted by same MAC & I have 10.10.10.10 is already with some other host too.
View 2 Replies View RelatedI downloaded Fedora 10 32bit and put it on a Dell Dimension 8200 to save it from the recycle bin. Everything seems to work except I cannot get an IP addr. Roadrunner is my ISP using a cable modem and a Linksys Instant Broadband Series Etherfast Cable/DSL router model BEFSR41. In system-config-network, the nic shows inactive. If I activate it a window opens saying "determining IP information for eth0". After a short time the message adds the word "failed". Using a Windows PC on the same network, I can look at the DHCP connections on the Linksys and I see the MAC addr for the PC running Fedora.
From the OS installation, /etc/sysconfig/networking/devices/ifcfg-eth0 has following:
DEVICE=eth0
HWADDR=00:80:ad:d1:88:c9
ONBOOT=yes
[Code]....
Since my upgrade to 10.04 I can't use my eth0 wired connection.The wireless works fine.I have tried auto eth0 in network connections set to manual and dhcp. eth0 shows up in ifconfig but no address is assigned.
View 1 Replies View RelatedJust Installed Fedora 10 on Dell PowerEdge 2950. Installation went fine. Problem is I cannot Assign a Ip address to eth0. Service "NetworkManager " dies on its own "ifconfig eth0 192168.0.8/24" works though.
View 6 Replies View RelatedI want to set my desktop IP address to always be 192.168.1.2. The NetworkManager connects to the network automatically and the IP address is assigned randomly. I can set up another connection in NetworkManager and always change over. But is there any way to make the default eth0 interface to be permanently set to a certain address (using NetworkManager, not ifup)?
View 9 Replies View RelatedThe IP address I want for the gateway computer is 192.168.1.100 As I have 'sharing' enabled in Network manager, there is no provision there to specify the IP address for eth0. That is, cannot manually set it there. Every time I boot up, the IP address changes to
[Code]...
I am trying to get networking up on an old PII which I have successfully installed with FC4. There is a link and activity on the onboard interface because I see the indicator lights. The controller is a 3Com PCI 3c905 Boomerang 100baseTx @ 0xdc80.The only message returned by dmesg about eth0 is "Dropping NETIF_F_SG since no checksum feature."The driver module, 3c59x, is loaded as well as the mii module that depends on it.There is something about "unknown parameter`irq'" in the dmesg text regarding the driver.I noticed that eth0 is sharing an IRQ with the UHCI Host Controller.That should not be a problem, but it should not be necessary. And I could do away with USB if this is a conflict and that is the easiest way to solve it.When I drop to console at runlevel 3, and call dhclient, which is installed, I get a message telling me there is no reply to the dhcp request.I don't think the problem is on the router/switch side.
View 5 Replies View RelatedI would like to configure the eth0 manually. I can configure the ip address and sub-netmask but the system can't hold my gateway ip address (I added). It will keep it 0.0.0.0. I have no problem when I getting IP address from DHCP server.
View 1 Replies View RelatedI'm looking for any snippet to manage MAC address via C code in Linux. I tried to write some code to change eth0 mac address writing it in smc911xx eeprom. What I did is the following..
#... some includes...
...
int skfd;
struct ifreq ifr;
[code]....
I'm having an issue configuring eth0. I'm using ubuntu 8.10 in a virtual machine (VirtualBox). The correct adapter is being used and it has worked in the past. I've tried placing eth0 in dhcp through the GUI and bash, but always get a 169 address or 127.
When I run the following command:
Code:
The output is:
Code:
I have trouble getting a gateway to the internet when setting eth0 with a fixed IP address. The gateway address (192.168.2.1 my modem/router) resets to 0.0.0.0 whenever I apply the changes. DHCP works fine but I need a fixed address for my server.
View 6 Replies View RelatedIm an academic (university networks and security lecturer) studying/teaching network and operating system security, and inspired by the work of Hovav Shacham set about testing ASLR on linux. Principley I did this by performing a brute force buffer overflow attack on Fedora 10 and Ubuntu 9. I did this by writting a little concurrent server daemon which accidently on purpose didnt do bounds checking.
I then wrote a client to send it a malicious string brute forcing guessed addresses which caused a return-to-libc to the function usleep with a parameter of 16m causing a delay of 16 seconds as laid out in [URL] Once I hit the delay I new I had found the function and could calculate delta_mmap allowing me to create a standard chained ret-to-libc attack. All of that works fine. However .... To complete my understanding I am trying establish where I can find the standard base address for ubuntu 9 (and other distros) for the following, taken from Shacham:-
Quote:
[code]....
/proc/uid/maps gives me some information but not the base address ldd also gives me the randomised starting address for sections in the user address space but neither gives me the base address. Intrestingly ... when a run ldd with aslr on for over (about) 100 times and checked the start point of libc I determined that the last 3 (least significant) hex digits were always 0's and the fist 4 (most significant) where between 0xB7D7 and 0xB7F9. To me this indicated that bits 22-31 were fixed and bits 12-21 were randomized with bits 11-0 fixed. Although even that doesnt define the boundaries observed correctly.
Note: I am replicating the attack to provide signatures to detect it using IDS, and for teaching purposes. I am NOT a hacker and if needed to could reply from my .ac.uk email address as verification.
Currently my OS is Ubuntu 9.04 Jaunty Jackalope Desktop OS and my web server is Apache2. I have a public address 60.x.y.z and my pc local address is 10.x.y.z. I have a web app in my Apache2 which currently run in localhost(10.x.y.z).
I would like to enable the web app so that it could be browse from outside. I know there maybe some port forwarding process and some commands involved in order to do that. But I have no idea on the steps to do that.
I am working on implementing a protocol on NS2.34 .I really need help to solve this problem . Actually , I don't now whether the problem is generated by the tcl code or the c++ code when I run the simulation, I get this result :
Code:
num_nodes is set 64
INITIALIZE THE LIST xListHead
34
45
channel.cc:sendUp - Calc highestAntennaZ_ and distCST_
highestAntennaZ_ = 1.5, distCST_ = 550.0
SORTING LISTS ...DONE!
code....
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.
View 1 Replies View Relatedif i attach a shared memory to my process whch part of the address space it will add(like stack, heap, data, code...).
View 3 Replies View RelatedConsider the following program:
Code:
#include <stdio.h>
#include <stdint.h>
[code]...
When I try to search for something in the main address bar It always adds the following with my input at the end
View 1 Replies View RelatedI'm running Ubuntu 10.10 and I'm having problems trying to assign it a static IP address. No matter what I put in the Preferences->Networking area (identifying the interface as Manual)... it still will query DHCP for an address if I run the dhclient command. I'm using to using ubuntu server where I just set the IP in the interfaces config file.
View 1 Replies View RelatedI need a small shell based program that prints the mac address of physical ethernet adapter from it's firmware. I need this utility for license generation and appliance activation. I have tried several example but none of them is flawless, The easiest method I have found is to parse the output of "ifconfig" command but it has also some drawbacks.
1. Firstly program should differentiate between physical and virtual adapters. Physical means installed on board(wired or wireless) or installed additionally. Virtual adapters are those created by VPN or created by virtualization apps such as VirtualBox/VMWare etc. I am not interested in virtual ones.
2. In case of more them one physical adapters(wired and wireless), it should print the mac address and description(name & vendor) of both/all adapters.
3. If media is disconnected then also it should be able to read the mac address and description(name, vendor) of card.
4. This one is bit complex. I know that 'ethtool' can show you the universal mac address but it's limited to use only 2 types of drivers and won't work in all cases.