On 10/25/23 05:01, Michael Kjörling wrote:
On 25 Oct 2023 07:32 +0200, from m...@dorfdsl.de (Marco M.):
TLD '.lan' works. As best I can tell on the web, it doesn't exist.
Is it intended for that?
No?
Then don't use it. It can be used in the future for public domains.
Exactly.
I see lots of people in this sub-thread arguing for cobbled-together,
"it works for me for now and if it breaks I'll just fix it later"
style solutions.
"home.arpa" is _reserved specifically_ for almost exactly the purpose
we're talking about: local (for example residential) use where one
does not want to pay for a domain name and/or does not need globally
unique names.
If you have anyway, or are willing to pay for, a domain name that you
can use for the purpose, great; all that power to you.
But most home users aren't in that situation. For those people,
"home.arpa" is _the official_ answer. It's not something I've made up.
There's an RFC, there's a corresponding domain name reservation, it's
specifically set up so that it won't break for example DNSSEC, and
that RFC is a _PROPOSED STANDARD_ which is pretty much as officially
sanctioned as things get on the public Internet. (I think IPv4 has the
status of STANDARD.)
Just like you shouldn't pick some IP address range at random for your
LAN if you want hosts on that LAN to be able to communicate unimpeded
with hosts on the Internet, you shouldn't randomly pick a domain name.
Using a domain name (or IP address range) which is reserved for
examples and documentation likely won't break anything important, but
it _will_ cause confusion (as evidenced earlier in this thread).
If you go with the domain name home.arpa and an IPv4 subnet sliced out
of one of 192.168.0.0/16, 172.12.0.0/12 or 10.0.0.0/8, you can be
_almost certain_ that nothing will break because of those choices, now
_or_ in the future.
This thread is the first I've heard of home.arpa as a domainname for
internal lan's. It s/b easy enough to switch my local lan to that since
only the domainname changes. The alias shouldn't need changed.
Is there an RFC number for this already?
None of the other alternatives I've seen proposed in this thread can
offer anything like such guarantees.
Thank you for this clarificaion.
Cheers, Gene Heskett.
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
