Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: [HELP] How to create a NIC eth0 in CentOs 6.3.
Operating Systems Linux Debian [HELP] How to create a NIC eth0 in CentOs 6.3. Post 302735489 by thmnetwork on Sunday 25th of November 2012 09:18:25 AM
Old 11-25-2012
First off: you posted this to the Debian subforum, when a better place would be the RHEL subforum.

Your problem is pretty common for anyone doing a VMWare clone of RHEL6. RHEL6 tries to keep network interface naming as deterministic as possible and so kudzu writes a udev rule whenever it sees a new NIC so that only that NIC's MAC address will ever be called by that name. The consequence of that is that the first time you boot into your cloned image it will pick up that new VM's NIC as a new interface (since the MAC address is different). So eth1 is actually the same interface as eth0 was on the original VM.

To get around this just go in and remove the lines for eth0 and eth1 in /etc/udev/rules.d/70-persistent-net.rules then use ifrename to rename eth1 to eth0. The latter step will fix the interface naming for your current boot but the former step will fix it across reboots. The alternative would be to edit the file then just reboot, but that takes too long in my opinion.
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

controlling traffic source from NIC eth0, eth1 in Linux

Hi Guys, is there a way to send traffic coming from the source iface (eth0, eth1)? i need to test traffic that will come from both eth0 and eth1 from a Linux box. Thanks, Martin (0 Replies)
Discussion started by: mdap
0 Replies

2. UNIX for Dummies Questions & Answers

Need to create a restricted user(Centos)

Hi, I am a newbie to Linux and I want to create a user which can only execute network config commands like ifconfig and ping(to check the config). The following is what I did but failed. 1) Created a group called 'netconfig'. 2) added a user named 'user'. 3) added user to the 'netconfig'... (4 Replies)
Discussion started by: ankushpandit
4 Replies

3. Solaris

create Virtual NIC in Solaris 10

Hi All, does any body know how to create Virtual NIC in Solaris 10 if any one have good article or reference kindly provide me i try to Google but i didn't find good one (7 Replies)
Discussion started by: jamisux
7 Replies

4. Solaris

x86 Solaris 10 nic driver added but not attached. NIC is not detected.

I couldn't install my nic in solaris 10. I compiled and added the driver but failed to attach the driver and ifconfig output shows only loopback dev. Please see the following output and tell me whether my nic has been detected and why the driver failed to attach? My nic is detected in linux... (0 Replies)
Discussion started by: vectrum
0 Replies

5. Red Hat

how to create hidden account in centos

hi everybody, iam using 32bit centos 6.2 on my machine, and i want to create hidden user 'test' , i mean to say while iam starting my centos at GUI mode, at that time that username 'test' should not appear at list of users, only i can use that username is command line. logging in through... (1 Reply)
Discussion started by: paruhang
1 Replies

6. Red Hat

I want to tune NIC's rps, rfs and xps value. which NIC device should I modify.

Dear All I want tune my NIC's rps, rfs and xps value. In my system I have two NIC (eth0, eth1) and I have a bond0 ( eth0, eth1). Here is the question? Which device should I modify ? eth0 and eth1? or just modify bond0 or modify all device (eth0, eth1, bond0) Any advice is welcome.... (0 Replies)
Discussion started by: nnnnnnine
0 Replies

7. Red Hat

Mkdir: cannot create directory `/home/phpmy/html': Permission denied centos

for incompatibility installation problems, I've decided to reinstall Centos 6.3 as can be seem from the df output, I've partitioned both / and and /home directories $ df -h Filesystem Size Used Avail Use% Mounted on /dev/sda8 12G 5.3G 6.5G 45% / tmpfs ... (2 Replies)
Discussion started by: jediwannabe
2 Replies

8. Linux

Create LVM of 2 Hard Drives while installing Centos 6.4.

Hello, I have install 2 HDD in my server and now installing the Centos6.4. I want create the LVM of those 2 HDD's so while i'm doing this it is not allowing me to select these 2 disk's from allowable disk list. Same problem if i tried to make Software RAID with creating LVM. Please help. (1 Reply)
Discussion started by: purushottamaher
1 Replies

9. Linux

Add two different subnet public IPs to single NIC or two different NIC on same box

Hello Admins, My ask is how can I add two different subnet IPs to same box with two different gateways? The issue is I can connect to the box when I am on ethernet LAN, but I am not able to connect to the same IP when I am on wifi. The server is RHEL 7 VM on vmware. How can I get connected... (4 Replies)
Discussion started by: snchaudhari2
4 Replies

10. UNIX for Beginners Questions & Answers

How to create a Solaris local zone with an exclusive NIC?

I'm trying to migrate a Solaris 10 flar archive from a Sun M3000 to a T4-1. When I first created the zone I followed the Oracle instructions here: Transitioning an Oracle Solaris 10 Instance to an Oracle Solaris 11 System - Transitioning From Oracle Solaris 10 to Oracle Solaris 11 That worked... (6 Replies)
Discussion started by: Michele31416
6 Replies

LEARN ABOUT CENTOS

ipsec_tncfg

IPSEC_TNCFG(8)							Executable programs						    IPSEC_TNCFG(8)

NAME

       ipsec_tncfg - manipulate KLIPS virtual interfaces

SYNOPSIS

       ipsec tncfg
	     ipsec tncfg --create virtual
	     ipsec tncfg --delete virtual
	     ipsec tncfg --attach --virtual virtual --physical physical
	     ipsec tncfg --detach --virtual virtual
	     ipsec tncfg --clear
	     ipsec tncfg --version
	     ipsec tncfg --help

KLIPS

       Note that tncfg is only supported on the KLIPS stack which uses ipsecX interfaces bound to physical interfaces

DESCRIPTION

       The purpose of tncfg is to attach/detach IPsec virtual interfaces (e.g. ipsec0) to/from physical interfaces (e.g. eth0) through which
       packets will be forwarded once processed by KLIPS.

       When using the MAST stack, tncfg is used to create and delete virtual interfaces known as mastXXX. mast stands for Mooring and XXX.

       The form with no additional arguments lists the contents of /proc/net/ipsec_tncfg. The format of /proc/net/ipsec_tncfg is discussed in
       ipsec_tncfg(5).

       The --attach form attaches the virtual interface to the physical one.

       The --detach form detaches the virtual interface from whichever physical interface it is attached to.

       The --clear form clears all the virtual interfaces from whichever physical interfaces they were attached to.

       Virtual interfaces typically have names like ipsec0 or mast0 while physical interfaces typically have names like eth0 or ppp0.

EXAMPLES

       ipsec tncfg --create mast12
	   creates the mast12 device.

       ipsec tncfg --create ipsec4
	   creates an ipsec4 device, but does not attach it.

       ipsec tncfg --attach --virtual ipsec0 --physical eth0
	   attaches the ipsec0 virtual device to the eth0 physical device.

FILES

       /proc/net/ipsec_tncfg, /usr/local/bin/ipsec

SEE ALSO

       ipsec(8), ipsec_manual(8), ipsec_eroute(8), ipsec_spi(8), ipsec_spigrp(8), ipsec_klipsdebug(8), ipsec_tncfg(5)

HISTORY

       Written for the Linux FreeS/WAN project <http://www.freeswan.org/> by Richard Guy Briggs.

AUTHOR

       Paul Wouters
	   placeholder to suppress warning

libreswan							    12/16/2012							    IPSEC_TNCFG(8)
All times are GMT -4. The time now is 09:04 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy