[CentOS] Network issue after new kernel install

Scott A. McClanahan Scott.McClanahan at trnswrks.com
Thu Nov 1 18:20:24 UTC 2007

-----Original Message-----
From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On
Behalf Of Michael D. Kralka
Sent: Thursday, November 01, 2007 2:12 PM
To: CentOS mailing list
Subject: Re: [CentOS] Network issue after new kernel install

Paul Norton wrote:
> On all of my CentOS 5 VMWare ESX3 virtual machines (about 15), after
> installing a new kernel and rebooting the machine, the Network script
> tries to run dhclient and can't determine the IP info (since I don't
> a dhcpd server... it's a static IP only lan).  This also backs up my
> ifcfg-eth0 file to ifcfg-eth0.bak and writes a new ifcfg-eth0 that has
> dhcpd with no IP info.  Copying the ifcfg-eth0.bak to ifcfg-eth0 and
> running /etc/init.d/network start or ifup eth0 brings my network back

I have found that kudzu does this if it detects changes in the MAC
addresses of your NICs. Did you clone/copy your virtual machine and did
VMware regenerate MAC addresses for your virtual NICs?


I had this as well.  I found that if you configured you ifcfg interface
script with the MAC address included and uncommented, kudzu no longer
manipulated the file.

More information about the CentOS mailing list