Bug 103628 - dhclient crashes with floating point exception when DHCP server returns zero leasetime
dhclient crashes with floating point exception when DHCP server returns zero ...
Product: Red Hat Linux
Classification: Retired
Component: dhcp (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Daniel Walsh
Depends On:
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Reported: 2003-09-03 07:00 EDT by Andrew Findlay
Modified: 2007-04-18 12:57 EDT (History)
0 users

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2003-09-05 16:40:21 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Andrew Findlay 2003-09-03 07:00:20 EDT
From Bugzilla Helper:
User-Agent: Mozilla/5.0 Galeon/1.2.10 (X11; Linux i686; U;) Gecko/20030314

Description of problem:
DHCP servers return zero in the lease-time field to indicate an unlimited lease.
(BOOTP servers can only issue unlimited leases)

dhclient crashes with a Floating Point Exception when it gets zero lease time.

This has been spotted in other OSs, e.g.:


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

How reproducible:

Steps to Reproduce:
1. Set up a DHCP server to return zero (infinite) lease times
2. Set up RH9 Linux to obtain network info by DHCP
3. Activate the ethernet interface

Actual Results:  ifup fails, citing Floating Point Exception in /sbin/dhclient

Expected Results:  ifup should report OK and set the IP address for the interface

Additional info:

The component field should be 'dhclient' but Bugzilla does not have such a category.
Comment 1 Daniel Walsh 2003-09-05 16:40:21 EDT
I applied the documented patch.  Thanks.

dhcp-3_0pl2-6_15 in rawhide
Comment 2 John Flanagan 2004-12-21 14:42:19 EST
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.


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