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Bug 622574

Summary: networking may go away after migration due to missing arp update
Product: Red Hat Enterprise Linux 5 Reporter: Paolo Bonzini <pbonzini>
Component: kernel-xenAssignee: Paolo Bonzini <pbonzini>
Status: CLOSED DUPLICATE QA Contact: Red Hat Kernel QE team <kernel-qe>
Severity: medium Docs Contact:
Priority: low    
Version: 5.5CC: xen-maint
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
: 622575 (view as bug list) Environment:
Last Closed: 2010-08-11 03:38:57 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:    
Bug Blocks: 514490, 622575    

Description Paolo Bonzini 2010-08-09 19:15:47 UTC 
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).
Comment 1 Paolo Bonzini 2010-08-09 19:16:11 UTC 
See http://lists.xensource.com/archives/html/xen-devel/2009-06/msg00185.html for a report of this happening.
Comment 2 Paolo Bonzini 2010-08-11 03:38:57 UTC 

*** This bug has been marked as a duplicate of bug 441716 ***