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[Launchpad Bug Tracker <1943266@xxxxxxxxxxxxxxxxxx>]

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When OpenStack instances are connected to an external network, an ovn-etadata-namespace is created in each compute that has VMs attached to that
network. Because the ovn-metadata namespace has interfaces with the same mac address in all computers, external switches might ARP query for the IP
 and receive multiple responses in different ports triggering network error alerts.

[ubuntu@sombrafam-bastion(kvm):~/internal_git/stsstack-bundles/openstack]$ sudo arping -c 1 10.5.150.0
ARPING 10.5.150.0
42 bytes from fa:16:3e:d3:10:01 (10.5.150.0): index=0 time=1.678 msec
42 bytes from fa:16:3e:d3:10:01 (10.5.150.0): index=1 time=2.143 msec

--- 10.5.150.0 statistics ---
1 packets transmitted, 2 packets received,   0% unanswered (1 extra)
rtt min/avg/max/std-dev = 1.678/1.911/2.143/0.232 ms


Reproducer: https://paste.ubuntu.com/p/nbnhvTM9d4/

** Affects: ubuntu-translations
     Importance: Undecided
     Assignee: Erlon R. Cruz (sombrafam)
         Status: Invalid

** Affects: ovn (Ubuntu)
     Importance: Undecided
         Status: Fix Released

** Affects: ovn (Ubuntu Focal)
     Importance: High
         Status: Fix Committed

** Affects: ovn (Ubuntu Hirsute)
     Importance: High
         Status: Fix Committed

** Affects: ovn (Ubuntu Impish)
     Importance: Undecided
         Status: Fix Released


** Tags: verification-done verification-done-focal verification-done-hirsute
-- 
Duplicated ARP responses from ovnmetadata namespaces
https://bugs.launchpad.net/bugs/1943266
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