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Bug 143704

Summary: DHclient -r doesn't release IP address as it should
Product: [Fedora] Fedora Reporter: Gael <gaellian>
Component: dhcpAssignee: Jason Vas Dias <jvdias>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: 3CC: sundaram
Target Milestone: ---   
Target Release: ---   
Hardware: i386   
OS: Linux   
Whiteboard:
Fixed In Version: 3.0.1-16 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2005-09-05 04:31:06 EDT Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Bug Depends On:    
Bug Blocks: 170780    

Description Gael 2004-12-24 10:08:11 EST
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.5)
Gecko/20041111 Firefox/1.0

Description of problem:
DHCLIENT from Fedora core 3

the command dhclient -r doesn't release the ip address

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


How reproducible:
Always

Steps to Reproduce:
1.dhclient -r
2.
3.
    

Expected Results:  ip adress should be released from DHCP server

Additional info:
Comment 1 Jason Vas Dias 2005-01-03 17:40:45 EST
The dhclient '-r' release lease option seems to work only
if the dhclient process that got the lease being released
is not running, or is run outside of the /sbin/ifup network
scripts - ie. doing:
  # ifdown eth0
  # ifconfig eth0 up 
  # dhclient eth0
  # dhclient -r eth0
works fine for me.
But if you do:
  # ifup eth0
  # dhclient -r eth0
This will not work; the dhclient process started by 'ifup' is
still around because the 'dhclient -r' process cannot find its
pid file, which is /var/run/dhclient-eth0.pid, and will 
reacquire the lease when it expires. 
You can get around this by doing:
  # dhclient -pf /var/run/dhclient-eth0.pid -r
but this is a pain.
I've now made a dhcp-3.0.1-16 rpm where in release mode, dhclient
will look for the pid file for each requested interface and kill
the dhclient process for that interface if found.
I will get it issued via FC3 updates; meanwhile, you can download it
from:

  http://people.redhat.com/~jvdias/dhcp/FC3/

with dhcp-3.0.1-16, doing a 'dhclient -r eth0' will have the same
effect as 'ifdown eth0' in killing the dhclient instance for eth0.