Aliasing in the DNS and HTTPS/SCVB RRs, 22 November 2022

It would be very handy to be able to establish an alias for an apex record in the DNS. Unfortunately, this is not a standardized feature of the DNS, although some operators have created proprietary features with this effect.
The new HTTPS and Service-binding (SCVB) resource records on the brink of standardization in the IETF are supposed to 'solve' this long-standing interoperability problem. Carsten Strotmann did some research and provided a primer on this topic, including:
- What is a CNAME?
- What is an Alias?
- What is the problem with CNAMEs at the zone apex?
- How is this new HTTPS/SCVB system supposed to work?
- What do we know about implementation status?
(The slides are available at www.isc.org/docs/2022-webinar-dns-scvb.pdf.)
You are welcome to post your questions about BIND 9 DNS on our helpful community mailing list at lists.isc.org/mailman/listinfo/bind-users. The BIND Administrative Reference Manual is online at bind9.readthedocs.io/en/stable/. We also maintain a knowledgebase of handy technical articles at kb.isc.org.
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