automatic reverse and forwarding zones

[Marco]

Am 27.10.2022 um 13:08:40 Uhr schrieb Grant Taylor via bind-users:

> Aside:  I do question what you would populate the /48 ~ /56 ip6.arpa 
> zone with.  What hypothetical data would you put in it?  If it's PD
> to an end user, what information would the ISP put in there that
> wouldn't be confidential or potentially reveal that any and all IPs
> in that prefix belong to a customer w/o also identifying the customer?

At least for IPv4, there are servers that reject connections from IPs
that don't have a reverse zone with PTR record.
That is the only reason that I see for that.
Most ISPs do it.