Bug 120531 – ifup starts multiple dhclient's

Bug 120531 - ifup starts multiple dhclient's

Summary:	ifup starts multiple dhclient's

Status:	CLOSED RAWHIDE

Aliases:	None

Product:	Fedora
Classification:	Fedora
Component:	initscripts (Show other bugs)
Sub Component:
Version:	rawhide
Hardware:	i386 Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Bill Nottingham
QA Contact:	Brock Organ
Docs Contact:

URL:
Whiteboard:
Keywords:

Duplicates:	120533 (view as bug list)
Depends On:
Blocks:
	Show dependency tree / graph

Reported:	2004-04-09 17:45 EDT by Nickolai Zeldovich
Modified:	2014-03-16 22:44 EDT (History)
CC List:	2 users (show)

See Also:
Fixed In Version:	FC4
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2005-09-30 16:48:54 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
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 17:45 EDT, Nickolai Zeldovich	no flags	Details \| Diff
Add an attachment (proposed patch, testcase, etc.)

Groups: None (edit)

Description Nickolai Zeldovich 2004-04-09 17:45:24 EDT

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
altogether.

Version-Release number of selected component (if applicable):
initscripts-7.49-1

How reproducible:
Always

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 17:45:50 EDT

Created attachment 99287 [details]
Patch for /sbin/ifup

Comment 2 Miloslav Trmac 2004-04-12 06:07:56 EDT

*** Bug 120533 has been marked as a duplicate of this bug. ***

Comment 3 Bill Nottingham 2005-09-30 16:48:54 EDT

Closing bugs on older, no longer supported, releases. Apologies for any lack of
response.

This should be fixed as of Fedora Core 4.

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