Description of problem: In the 2.6.21-1.3194.fc7 release, if you have the NetworkManager service running, then the ifdown and ifup commands work fine. In the 2.6.22.1-41.fc7 release, if you have the NetworkManager service running, then the ifdown command works fine but you get errors as below with the ifup command. It seems that both the NetworkManager and ifup are running dhclient at the same time, and that is what is causing the trouble. Yes, NetworkManager is in the large part meant to be used separately from ifup/ifdown, but this interaction issue seems to be an unfriendly step backwards, and there are times when you do want to manually force the interface to be restarted and don't expect to get these errors. Version-Release number of selected component (if applicable): 2.6.22.1-41.fc7 How reproducible: Always Steps to Reproduce: 1. Allow your network connection to be configured by NetworkManager (I used a wired ethernet connection) 2. ifdown the network interface 3. ifup the network interface and see errors Actual results: Here's what I see with 2.6.22.1-41.fc7: [root@localhost ~]# uname -a Linux localhost.localdomain 2.6.22.1-41.fc7 #1 SMP Fri Jul 27 18:10:34 EDT 2007 i686 i686 i386 GNU/Linux [root@localhost ~]# ifdown eth0 [root@localhost ~]# ifup eth0 Determining IP information for eth0.../etc/sysconfig/network-scripts/ifup-eth: line 273: 6166 Terminated /sbin/dhclient ${DHCLIENTARGS} ${DEVICE} failed. Here's what I see with the older 2.6.21-1.3194.fc7: [root@localhost ~]# uname -a Linux Vigor14 2.6.21-1.3194.fc7 #1 SMP Wed May 23 22:35:01 EDT 2007 i686 i686 i386 GNU/Linux [root@localhost ~]# ifdown eth0 [root@localhost ~]# ifup eth0 Determining IP information for eth0... done. [root@localhost ~]# Expected results: No errors
Shouldn't make a difference. How is dhclient being terminated?
The dhclient isn't being terminated by me.... the termination message is the error I get from the scripts without any manual intervention. I presume that the dhclient is being terminated because when ifup runs, it brings up the network interface, and before the script gets opportunity to run dhclient, NetworkManager runs dhclient, and then in a moment ifup runs its own dhclient...so together they are attempting to run two copies of dhclient simultaneously which causes problems.
Right, but that should be the same in either case with the kernel. If you run dhclient by hand with the same arguments, does it also fail?
If I run dhclient by hand, NetworkManager does indeed kill it off. Killing off other dhclient processes whether they are running as invoked from ifup or directly on the commandline seems to be a feature of NetworkManager, at least in this version of it. The ifup script does not gracefully handle having its dhclient killed off by NetworkManager.
And this behavior changed when you upgraded kernels, not with a new NetworkManager?
It does seem likely that this changed with a new NetworkManager but I remain unsure of what component changed to introduce this problem
This problem also visible on f8 (2.6.23.1-49.fc8) While NetworkManager running.... [root@localhost ~]# ifdown eth0 [root@localhost ~]# ifup eth0 Determining IP information for eth0...dhclient(3699) is already running - exiting. This version of ISC DHCP is based on the release available on ftp.isc.org. Features have been added and other changes have been made to the base software release in order to make it work better with this distribution. Please report for this software via the Red Hat Bugzilla site: http://bugzilla.redhat.com exiting. failed.
This message is a reminder that Fedora 8 is nearing its end of life. Approximately 30 (thirty) days from now Fedora will stop maintaining and issuing updates for Fedora 8. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as WONTFIX if it remains open with a Fedora 'version' of '8'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version prior to Fedora 8's end of life. Bug Reporter: Thank you for reporting this issue and we are sorry that we may not be able to fix it before Fedora 8 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora please change the 'version' of this bug to the applicable version. If you are unable to change the version, please add a comment here and someone will do it for you. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete. The process we are following is described here: http://fedoraproject.org/wiki/BugZappers/HouseKeeping
Fedora 8 changed to end-of-life (EOL) status on 2009-01-07. Fedora 8 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. Thank you for reporting this bug and we are sorry it could not be fixed.