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Bug 2131273

Summary: [ovs][ovn] Add the possibility to set IPv6 Neighbor Advertisement Message fields
Product: Red Hat Enterprise Linux Fast Datapath Reporter: Daniel Alvarez Sanchez <dalvarez>
Component: ovn22.12Assignee: OVN Team <ovnteam>
Status: CLOSED DUPLICATE QA Contact: Jianlin Shi <jishi>
Severity: high Docs Contact:
Priority: unspecified    
Version: FDP 22.GCC: bcafarel, ctrautma, jhsiao, jiji, ovs-qe, ovs-team, ralongi
Target Milestone: ---   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
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Story Points: ---
Clone Of: 2131270
: 2131276 (view as bug list) Environment:
Last Closed: 2022-10-03 14:47:20 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: 2131270    
Bug Blocks: 2131276    

Description Daniel Alvarez Sanchez 2022-09-30 13:45:22 UTC 
+++ This bug was initially created as a clone of Bug #2131270 +++

Today, OVS can't set certain flags on NA packets and OVN needs to implement the NDP responder via a controller action [0] rather than via flows (as with ARP). 

This creates an unwanted dependency on ovn-controller running for dataplane(IPv6) traffic leading to potential glitches and downtime in the event of updates of ovn-controller and a potential bottleneck (only one thread handling controller actions).

There was a proposal upstream [1] and a request [2] a while back that didn't seem to get traction.

This BZ is to track the inclusion of the feature in OVN once OVS implements the missing bits.


[0] https://github.com/ovn-org/ovn/blob/2e4f393650ccf298f26787583c13a88197ba8348/controller/pinctrl.c#L6030
[1] http://patchwork.ozlabs.org/project/openvswitch/patch/20200928134947.48269-1-fankaixi.li@bytedance.com/
[2] https://mail.openvswitch.org/pipermail/ovs-discuss/2020-July/050388.html
Comment 1 Daniel Alvarez Sanchez 2022-10-03 14:47:20 UTC 

*** This bug has been marked as a duplicate of bug 1920499 ***