Bug 622575

Summary: networking may go away after migration due to missing arp update
Product: Red Hat Enterprise Linux 6 Reporter: Paolo Bonzini <pbonzini>
Component: kernelAssignee: Paolo Bonzini <pbonzini>
Status: CLOSED ERRATA QA Contact: Network QE <network-qe>
Severity: medium Docs Contact:
Priority: low    
Version: 6.0CC: drjones, haliu, hjia, xen-maint
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: kernel-2.6.32-117.el6 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: 622574 Environment:
Last Closed: 2011-05-19 12:40:49 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 622574    
Bug Blocks: 653816    
Attachments:
Description Flags
backport none

Description Paolo Bonzini 2010-08-09 19:17:11 UTC 
+++ This bug was initially created as a clone of Bug #622574 +++

The following patches upstream implement gratuitous ARP notification.  They would be useful in RHEL5 and RHEL6 as well.

eefef1cf (net: add ARP notify option for devices, 2009-02-01)
a21090cf (ipv4: arp_notify address list bug, 2009-10-07)
http://kerneltrap.org/mailarchive/linux-netdev/2010/5/26/6278032
http://kerneltrap.org/mailarchive/linux-netdev/2010/5/26/6278033
http://kerneltrap.org/mailarchive/linux-netdev/2010/5/26/6278031

The last three are scheduled for merge in 2.6.36 (http://www.spinics.net/lists/netdev/msg137066.html).

--- Additional comment from pbonzini on 2010-08-09 15:16:11 EDT ---

See http://lists.xensource.com/archives/html/xen-devel/2009-06/msg00185.html for a report of this happening.
Comment 1 Paolo Bonzini 2010-08-12 04:15:02 UTC 
The patches are scheduled for 2.6.32.y, so we'll probably get them from there.
Comment 2 RHEL Program Management 2010-11-18 16:19:42 UTC 
This request was evaluated by Red Hat Product Management for inclusion
in a Red Hat Enterprise Linux maintenance release. Product Management has 
requested further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed 
products. This request is not yet committed for inclusion in an Update release.
Comment 3 Paolo Bonzini 2011-01-05 11:33:03 UTC 
Created attachment 471838 [details]
backport
Comment 4 Aristeu Rozanski 2011-02-18 22:14:51 UTC 
Patch(es) available on kernel-2.6.32-117.el6
Comment 9 errata-xmlrpc 2011-05-19 12:40:49 UTC 
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 therefore 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.

http://rhn.redhat.com/errata/RHSA-2011-0542.html