The easy way is definitely pushing both IPv6 and IPv4 addresses of any
service into DNS. Use at least mdns (which is not resolving also IPv6 in
our default configuration sadly), which converts names to ipaddress and
back. That in my opinion is the target. To use human friendly names, not
IP addresses. Sure, IPv4 are shorter and easier to type in or even
spell. But we need the address bits, there is no workaround. IP
addresses are not user-friendly way.
Dnsmasq for example creates name<->IP address mapping for every machine
asking DHCP from it. That is the way to go. Name your machine and
reference it by name from others. Avahi is a good alternative for
locating your device, even when network does not do mapping to it. If
some device does not insert names automatically (hello Mikrotik!), ask
their vendor to fix that. Usage of IP addresses should be reduced to
strictly necessary minimum. Copy & paste should help with that.
Tomorrow is IPv6 Seminar at Prague [3], I am going to attend that. I
have still many questions, I am not really IPv6 guru (yet?).
On 05. 06. 23 15:27, Michal Schorm wrote:
Thought:
(disclaimer: I don't know much about networking)
IPv4 addresses are in some cases 'human readable' / 'human usable' /
'human friendly'.
How can one set up a temporary network of several devices for a LAN
party or any similar connecting application use cases?
From my own experience, the vast majority of people have no idea that
when one tells you "write in: ten zero zero eight", they have to put
dots in between. Because they have no idea what IP address is and how
it's formatted.
I can't imagine I would say this out loud to even a tech experienced
person and they would get it right the first time.
1a01:4204:b07d:af00:21c6:542a:611:73ea
For real addresses which users actually has to type it is usually better.
dns.google: 2001:4860:4860::8844
dns9.quad9.net: 2620:fe::9
Not mentioning all the times I need to connect devices in many rooms
across several floors in the whole building.
Is there any easy way to keep exchanging the IP address 'human usable' ?
No. But we have DNS there for decades to make them human usable. We just
need to use it everytime we can. Autoconfigure it when possible. What I
am not sure is how should SLAAC allocated addresses be paired with a
name provided by the network, into which they are connected to. It is
supported with DHCP(v6), but I don't know a good way for router
advertisements. A question for experts!
Though domain name services is the area I am expert in already. If there
is integration missing in some area, fill a bug! Even to me.
--
Michal Schorm
Software Engineer
Core Services - Databases Team
Red Hat
--
On Thu, May 25, 2023 at 10:51 PM Petr Menšík <pemensik@xxxxxxxxxx> wrote:
Hello everyone,
I have attended recently csnog.eu conference [1], where some interesting
presentations took place. They were usually in Czech, so it is not
something I am going to share more. But what took my interest were ipv6
readiness with some exceptions. Fedora is ready to be run on dual-stack
IPv4 and IPv6 networks just fine. But the presentation were about future
case where we run most hosts on IPv6 network only, but allow some older
devices to take and use also IPv4 address.
Fortunately there is roughly the same presentation[2] in English, which
took the place on RIPE 85 meeting. What catched my interest were talk
about Windows 11 and Apple systems are ready, but not really talk about
how any linux distribution is ready for such situation. It seems to me
we should improve the support for mentioned mechanisms in Fedora.
What do you think about it?
[1] https://indico.csnog.eu/event/13/contributions/121/
[2] https://ripe85.ripe.net/archives/video/923/
3. https://www.cesnet.cz/akce/seminar-ipv6-2023/
--
Petr Menšík
Software Engineer, RHEL
Red Hat, http://www.redhat.com/
PGP: DFCF908DB7C87E8E529925BC4931CA5B6C9FC5CB
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