Carlos E. R. wrote:
On 2023-04-28 19:36, Per Jessen wrote:
Carlos E. R. wrote:
On Friday, 2023-04-28 at 09:39 -0700, Lew Wolfgang wrote:
On 4/28/23 09:01, Per Jessen wrote:
Lew Wolfgang wrote:
* avoid problems when the ipv4 pool is exhausted.
But that's why God invented NAT!
NAT is a royal PITA. We accept it because there is, there wasn't, no alternative.
To be honest, I'm not sure whether to agree or not :-) I can't say I have ever had any unresolvable problems with NAT.
Oh, we had to solve them, so we did. For private individuals, it is harder.
I was going to ask you to list some of these harder problems, but it's wayyyy off topic and not overly interesting anyway.
For example, with IPv6 you can send email directly from your machine to somebody else direct, without any intermediate mail server collecting it.
Um, same with IPv4.
If you have routable addresses.
No, that is not necessary. Technically, I can send a mail from my MUA here on 192.168.77.88 behind NAT directly to any mailserver on public IPv4. Of course, any semi-qualified mail admin will block that due to reverse lookup failure, but that applies to IPv6 too.
Or phone them.
Um, same with IPv4. (for inbound telephony, you need something to keep the connection open).
But not with IPv6.
When there is no NAT in between, correct.
You don't even need a directory, just type the IP address (I have not tried, it is theory). But I did do VoIP inside the LAN in that manner with IPv4.
Carlos, the same applies to public IPv4/5/6. Like above, I can initiate SIP from my telephone here on 192.168.77.89 behind NAT directly to any VoIP device (on port 5060) on public IPv4. <anecdote> Twelve-thirteen years ago, I had three people employed in home-office, in Bern, Basel and Solothurn, on their private ADSL lines. They each had a Linksys SPA921 phone - my Asterisk box was behind NAT. It worked exceptionally well (even if I had to dabble with traffic control to keep bandwidth reserved for VoIP). </anecdote> -- Per Jessen, Zürich (18.0°C) Member, openSUSE Heroes (2016 - present) We're hiring - https://en.opensuse.org/openSUSE:Heroes