Re: [DNSOP] [Ext] WGLC rfc8499bis one week extension for lame delegation definition

[Havard Eidnes <[e-mail]>]

> A lame delegation is said to exist when a server assumed (by
> the querier) to be authoritative for a zone replies
> non-authoritatively for {any|all} data within the zone.
...
> 3) {any|all} open question...can a server be "partially lame?"

Sadly, yes, ref. suspected load balancers who have been taught
how to reply to A queries, but return empty non-AA answers
(possibly with authority information) when queried for other
record types, such as AAAA, ref.

dig @ns4.bpldns.com. lzd.jshsos.ksyunv5.com. a

vs.

dig @ns4.bpldns.com. lzd.jshsos.ksyunv5.com. aaaa

(this example came up earlier in the discussion, just repeating
it here as an example)

See the results of querying for "ns" or "soa", they are also
non-AA but with a authority section among others pointing to
itself, similar to the result for the "aaaa" query.

Regards,

- Håvard