Incorrect ARP processing when enable_distributed_floating_ip=True
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
ovn (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned | ||
Focal |
Fix Released
|
High
|
Frode Nordahl | ||
Groovy |
Fix Released
|
Undecided
|
Unassigned | ||
Hirsute |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
[Impact]
Enabling `enable-
[Test Case]
Launch two instances and assign floating IPs to them. Toggle the `enable-
Observe as the instances will attempt to reach the IP by obtaining it's MAC address through ARP resolution directly rather than applying L3 routing.
The functional test gate of the neutron-
[Regression Potential]
We have cherry-picked a patch from upstream that reverts the change that introduced the erratic behavior in its entirety. The optimization has later been replaced by a new set of patches which is available in newer versions. As such the regression potential is minimal.
[Original Bug Report]
In a focal-ussuri deployment when enabling `enable-
However due to a bug each HV will attempt to do ARP processing locally even for IP addresses not in the external network CIDR.
This results in loss of connectivity for instances with FIPs.
The issue is not present in Groovy with OVN 20.06 and I suspect the issue is fixed by this commit:
https:/
Related branches
- Ubuntu Server Developers: Pending requested
-
Diff: 4592 lines (+4464/-0)21 files modifieddebian/changelog (+12/-0)
debian/patches/ovn-ctl-cluster-db-upgrades.patch (+63/-0)
debian/patches/ovn-northd-revert-manage-arp-process-locally-dvr.patch (+198/-0)
debian/patches/ovn-ofctrl-predictable-resolution-conflicting-flow-actions-01.patch (+66/-0)
debian/patches/ovn-ofctrl-predictable-resolution-conflicting-flow-actions-02.patch (+892/-0)
debian/patches/ovn-ofctrl-predictable-resolution-conflicting-flow-actions-03.patch (+719/-0)
debian/patches/ovn-ofctrl-predictable-resolution-conflicting-flow-actions-04.patch (+157/-0)
debian/patches/ovn-ofctrl-predictable-resolution-conflicting-flow-actions-05.patch (+484/-0)
debian/patches/ovn-ofctrl-predictable-resolution-conflicting-flow-actions-06.patch (+112/-0)
debian/patches/ovn-ofctrl-predictable-resolution-conflicting-flow-actions-07.patch (+236/-0)
debian/patches/ovn-ofctrl-predictable-resolution-conflicting-flow-actions-08.patch (+93/-0)
debian/patches/ovn-ofctrl-predictable-resolution-conflicting-flow-actions-09.patch (+220/-0)
debian/patches/ovn-ofctrl-predictable-resolution-conflicting-flow-actions-10.patch (+80/-0)
debian/patches/ovn-ofctrl-predictable-resolution-conflicting-flow-actions-11.patch (+218/-0)
debian/patches/ovn-ofctrl-predictable-resolution-conflicting-flow-actions-12.patch (+43/-0)
debian/patches/ovn-ofctrl-predictable-resolution-conflicting-flow-actions-13.patch (+419/-0)
debian/patches/ovn-ofctrl-predictable-resolution-conflicting-flow-actions-14.patch (+126/-0)
debian/patches/ovn-ofctrl-predictable-resolution-conflicting-flow-actions-15.patch (+66/-0)
debian/patches/ovn-ofctrl-predictable-resolution-conflicting-flow-actions-16.patch (+135/-0)
debian/patches/ovn-ofctrl-predictable-resolution-conflicting-flow-actions-17.patch (+106/-0)
debian/patches/series (+19/-0)
Changed in ovn (Ubuntu): | |
status: | New → In Progress |
status: | In Progress → Fix Released |
importance: | Undecided → High |
assignee: | nobody → Frode Nordahl (fnordahl) |
Changed in ovn (Ubuntu Focal): | |
status: | New → In Progress |
importance: | Undecided → High |
assignee: | nobody → Frode Nordahl (fnordahl) |
Changed in ovn (Ubuntu): | |
importance: | High → Undecided |
assignee: | Frode Nordahl (fnordahl) → nobody |
Changed in ovn (Ubuntu Groovy): | |
status: | New → Fix Released |
description: | updated |
description: | updated |
Hello Frode, or anyone else affected,
Accepted ovn into focal-proposed. The package will build now and be available at https:/ /launchpad. net/ubuntu/ +source/ ovn/20. 03.1-0ubuntu1. 2 in a few hours, and then in the -proposed repository.
Please help us by testing this new package. See https:/ /wiki.ubuntu. com/Testing/ EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.
If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification- needed- focal to verification- done-focal. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification- failed- focal. In either case, without details of your testing we will not be able to proceed.
Further information regarding the verification process can be found at https:/ /wiki.ubuntu. com/QATeam/ PerformingSRUVe rification . Thank you in advance for helping!
N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.