Wildcard

[Tony Finch]

rams <bramesh80 at gmail.com> wrote:

> When we have widlcard in middle labels, are we not treating as wildcard
> record?

In the DNS, a wildcard only occurs when the leftmost label is a *.

> Do we have any specific RFC for this.

https://tools.ietf.org/html/rfc4592#section-2.1

NOTE that wildcard rules can be confusingly different, in particular the
rules for X.509 wildcards are incompatible with DNS wildcards except for
the most simple uses.

https://tools.ietf.org/html/rfc6125#section-6.4.3

Tony.
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