Bug 983427
Summary: | Udp checksums errors running dhclient on EL5 KVM guest on EL6 KVM host with dhcpd | ||
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Product: | Red Hat Enterprise Linux 5 | Reporter: | Simon Matter <simon.matter> |
Component: | dhcp | Assignee: | Jiri Popelka <jpopelka> |
Status: | CLOSED WONTFIX | QA Contact: | Release Test Team <release-test-team-automation> |
Severity: | unspecified | Docs Contact: | |
Priority: | unspecified | ||
Version: | 5.9 | CC: | simon.matter |
Target Milestone: | rc | ||
Target Release: | --- | ||
Hardware: | Unspecified | ||
OS: | Unspecified | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | Bug Fix | |
Doc Text: | Story Points: | --- | |
Clone Of: | Environment: | ||
Last Closed: | 2014-01-16 14:04:44 UTC | Type: | Bug |
Regression: | --- | Mount Type: | --- |
Documentation: | --- | CRM: | |
Verified Versions: | Category: | --- | |
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
Cloudforms Team: | --- | Target Upstream Version: | |
Embargoed: |
Description
Simon Matter
2013-07-11 08:13:10 UTC
(In reply to Simon Matter from comment #0) > There is a "xen partial checksums patch" in the dhclient rpm which I > expected to fix this, but it does not. Yes, that patch has been there to work-around this problem. (In reply to Simon Matter from comment #0) > I get access denied to the BZs in > question (#221964 and #219681) so I don't know what exactly the patch is about. Yes, they're marked private, sorry. You can also take a look at http://comments.gmane.org/gmane.comp.emulators.kvm.devel/65236 https://lists.isc.org/pipermail/dhcp-hackers/2010-April/001835.html But, why do I see the problem above even with the patch in the EL5 package? And I'm not alone, a quick google search shows that others have the same problem. Here is a report of exactly the same issue on CentOS 5. I think that's the same because it also happens with other distributions like older Debian. http://lists.centos.org/pipermail/centos/2013-February/132080.html (In reply to Simon Matter from comment #3) > But, why do I see the problem above even with the patch in the EL5 package? No idea, really, this needs more investigation. Additional info: The host where the problem shows up has not firewall rules at all. I don't know why this should matter but just wanted to make clear. The interesting thing is that I have another guest where the problem doesn't seem to appear but I can't find why it should behave different. The only differences I see, despite having the same dhclient-3.0.5-33.el5_9, are: - There are some netfilter rules but they have nothing to do with dhcp or checksumming AFAIK. - The kernel is a custom kernel based on EL5 kernel-2.6.18-26x. So, if virtio_net has changed between 2.6.18-26x and current kernels, could it also cause problems? (In reply to Simon Matter from comment #6) > So, if virtio_net has changed between 2.6.18-26x and current kernels, could > it also cause problems? Could be possible, yes. This Bugzilla has been reviewed by Red Hat and is not planned on being addressed in Red Hat Enterprise Linux 5, and therefore will be closed. If this bug is critical to production systems, please contact your Red Hat support representative and provide sufficient business justification. Issue is already fixed in RHEL-6/7. |