Bug 120531 - ifup starts multiple dhclient's
Summary: ifup starts multiple dhclient's
Alias: None
Product: Fedora
Classification: Fedora
Component: initscripts (Show other bugs)
(Show other bugs)
Version: rawhide
Hardware: i386 Linux
Target Milestone: ---
Assignee: Bill Nottingham
QA Contact: Brock Organ
: 120533 (view as bug list)
Depends On:
TreeView+ depends on / blocked
Reported: 2004-04-09 21:45 UTC by Nickolai Zeldovich
Modified: 2014-03-17 02:44 UTC (History)
2 users (show)

Fixed In Version: FC4
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2005-09-30 20:48:54 UTC
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
Patch for /sbin/ifup (864 bytes, patch)
2004-04-09 21:45 UTC, Nickolai Zeldovich
no flags Details | Diff

Description Nickolai Zeldovich 2004-04-09 21:45:24 UTC
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040312

Description of problem:
When ifup is ran multiple times, multiple copies of dhclient are
started.  This is exacerbated by a DHCP server that takes a long time
to reply -- this means that the race condition window between ifup
doing a kill on the old dhclient, and the new dhclient writing out the
/var/run/pid file upon getting a lease, is quite large.

The attached patch uses /usr/bin/lockfile to do strict locking to
avoid the possibility of concurrently running dhclient processes

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1.Run /sbin/ifup eth0 &
2.Run /sbin/ifup eth0
3.Notice two dhclient's running that don't exit

Actual Results:  As a result of having two dhclient processes running,
each process obtains a different DHCP lease and reconfigures the
interface according to _its_ lease periodically.

Additional info:

Comment 1 Nickolai Zeldovich 2004-04-09 21:45:50 UTC
Created attachment 99287 [details]
Patch for /sbin/ifup

Comment 2 Miloslav Trmac 2004-04-12 10:07:56 UTC
*** Bug 120533 has been marked as a duplicate of this bug. ***

Comment 3 Bill Nottingham 2005-09-30 20:48:54 UTC
Closing bugs on older, no longer supported, releases. Apologies for any lack of

This should be fixed as of Fedora Core 4.

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