Bug 694798 - Multiple dhclients can steal each others' DHCPOFFERs
Summary: Multiple dhclients can steal each others' DHCPOFFERs
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: dhcp
Version: 6.1
Hardware: All
OS: Linux
medium
medium
Target Milestone: rc
: ---
Assignee: Jiri Popelka
QA Contact: Release Test Team
URL:
Whiteboard:
Depends On: 623953
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-04-08 13:13 UTC by Jiri Popelka
Modified: 2011-12-06 12:00 UTC (History)
5 users (show)

Fixed In Version: dhcp-4.1.1-20.P1.el6
Doc Type: Bug Fix
Doc Text:
Previously, when multiple DHCP clients were launched at the same time to handle multiple virtual interfaces on the same network interface card (NIC), the clients used the same seed to choose when to renew their leases. Consequently, these virtual interfaces for some clients could have been removed over time. With this update, the dhclient utility uses the Process Identifier (PID) for seeding the random number generator, which fixes the bug.
Clone Of: 623953
Environment:
Last Closed: 2011-12-06 12:00:39 UTC
Target Upstream Version:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2011:1597 0 normal SHIPPED_LIVE dhcp bug fix and enhancement update 2011-12-06 00:51:17 UTC

Comment 4 Miroslav Svoboda 2011-08-30 10:55:40 UTC 
    Technical note added. If any revisions are required, please edit the "Technical Notes" field
    accordingly. All revisions will be proofread by the Engineering Content Services team.
    
    New Contents:
Previously, when multiple DHCP clients were launched at the same time to handle multiple virtual interfaces on the same network interface card (NIC), the clients used the same seed to choose when to renew their leases. Consequently, these virtual interfaces for some clients could have been removed over time. With this update, the dhclient utility uses the Process Identifier (PID) for seeding the random number generator, which fixes the bug.
Comment 6 errata-xmlrpc 2011-12-06 12:00:39 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHBA-2011-1597.html
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