1. DNS/lame_delegation/RFC8499
用語集だが、 lame delegation がなにをもたらすのか、 危険性についての言及はない。
Lame delegation: "A lame delegations exists [sic] when a nameserver
is delegated responsibility for providing nameservice for a zone
(via NS records) but is not performing nameservice for that zone
(usually because it is not set up as a primary or secondary for
the zone)." (Quoted from [RFC1912], Section 2.8)
Another definition is that a lame delegation "...happens when a name
server is listed in the NS records for some domain and in fact it
is not a server for that domain. Queries are thus sent to the wrong servers, who don't know nothing [sic] (at least not as
expected) about the queried domain. Furthermore, sometimes these
hosts (if they exist!) don't even run name servers." (Quoted from
[RFC1713], Section 2.3)危険性についての言及はない。
これらの説明では不十分だ。 -- ToshinoriMaeno 2019-09-30 00:11:20