I am going to close this as any discussion would first have to happen on
the OVN mailing list. If after that there is any change required in
Neutron you can open an RFE for that.
** Changed in: neutron
Status: New => Invalid
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https://bugs.launchpad.net/bugs/2081643
Title:
Neutron OVN support for CARP
Status in neutron:
Invalid
Bug description:
Does Neutron ML2/OVN support CARP as a Virtual IP synchronization
protocol ? (Without disabling Port Security)
I’ve been trying to make it work but from what I did managed to understand.
CARP uses a mac address with following format 00-00-5E-00-01-{VRID}
It answers the ARP Request for Virtual Addresses with source mac of the Main
Interface but as arp.sha it uses the mac address mentioned above and from what
I could read on OVN source code it doesn’t seems like OVN matches any arp
response with different eth.source and arp.sha fields.
link to OVN code:
https://github.com/ovn-org/ovn/blob/16836c3796f7af68437f9f834b40d87c801dc27c/controller/lflow.c#L2707
https://datatracker.ietf.org/doc/html/rfc5798#section-7.3
https://datatracker.ietf.org/doc/html/rfc5798#section-8.1.2
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