OpenStack Designate Shared Zones and Classless IN ADDR ARPA delegation
Channel: OpenInfra Foundation
Date: 29/06/2023

With the depletion of available IPv4 address blocks worldwide, managing publicly routable IPv4 addresses has become a pressing concern. This is especially true with the growing number of edge deployments requiring IPv4 endpoints.

OpenStack Designate is adding a new feature called “Shared Zones” that allows sharing a single DNS zone with multiple OpenStack projects. This not only allows two or more projects to manage recordsets in the zone, but enables “Classless IN-ADDR.ARPA delegation” (RFC 2317) in Designate. Classless IN-ADDR.ARPA delegation allows IP address DNS PTR record assignment in smaller blocks without creating a DNS zone per address.

This talk will introduce the new “Shared Zones” feature with use case examples. It will then describe classless IN-ADDR.ARPA delegation and how to implement it using Designate. Finally, we will discuss future development opportunities to enhance OpenStack Neutron to automate Classless IN-ADDR.ARPA delegation for floating IP and port creation.

Speakers:
Michael Johnson


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