On Friday, February 13, 2026 11:36:18 AM David Wright wrote:
> On Fri 13 Feb 2026 at 09:37:25 (-0500), [email protected] wrote:
> > Wow, false alarm -- I am thoroughly embarrassed [ … ]
>
> No need. When you've spent twenty years typing 192.168.1.x,
> it's all muscle memory.
Thanks (for the understanding)!
> But can you just clarify—are you saying that two computers connected
> to the TMO RJ45 ports can communicate via their 192.168.12.x static
> addresses? That would be useful to promulgate here.¹
I can't say that for sure -- checking my wiring I see that I am using only one
of those 2 Rh45 plugs, which then goes to a switch (and two computers and my
Obi200) and the other port on that first switch goes to another switch and
another computer (and a normally unpowered WiFi router).
At some point I may test that, but no promises as to when -- oh, I guess I
could hook up a working laptop (after I get one working) and test that -- it
could be a while whatever I do.
Thanks for the description (below) and the comment that, at least for non-VOIP
applications, the double NATing has not caused problems!
<no new comments below this line>
> We have an ISP-provided cable modem/router here that's similar
> in having two ethernet ports plus WAP. We don't have any VoIP,
> but I use your method 3, as outlined in my previous response
> to you here:
>
> lists.debian.org/debian-user/2023/04/msg01197.html
>
> IOW, the ISP device is treated as just a modem.
>
> Since then I picked up a $15 clearance Archer C7 router that is
> now the primary router, and both the other routers are now WAP
> repeaters and ethernet switches (we built several cat5/6 cables
> into the house).
>
> Our LAN uses 192.168.1.x addresses², and the WAN side of the Archer
> happens to get 192.168.0.x assigned by DHCP from the ISP device.
> Double NAT causes no addressing issues as the ISP device's WAP
> is not used. I don't see any performance penalty.
>
> As for the second ethernet port on the ISP device, I leave it
> connected to the Roku (ethernet&wifi) device that sits by it.
> The Roku prefers its WiFi connection to our LAN, but after an
> ISP outage, the direct connection can be useful for determining
> whether the ISP device has successfully logged in or not. (On one
> or two occasions, the service has gone down and come up several
> times before returning to a steady state.)
>
> ¹ We get marketing material about this 5G service. Their web pages
> are silent on this point.
>
> ² The Archer runs a DHCP server for the twenty devices, and our
> computers have a "copy" of the address table in /etc/hosts.
> As for routing tables, there's nothing to do.
>
> Cheers,
> David.
--
rhk
| Sorry about the sig -- some people think it is too long -- it is my soapbox.
(sig revised 20240703 -- new first paragraph (above))
(sig revised 20241111 -- new penultimate paragraph)
No entity has permission to use this email to train an AI.
If you reply: snip, snip, and snip again; leave attributions; avoid HTML;
avoid top posting; and keep it "on list". (Oxford comma (and semi-colon)
included at no charge.) If you revise the topic, change the Subject: line.
If you change the topic, start a new thread.
Writing is often meant for others to read and understand (legal documents
excepted?). Make it easier for your reader by various means, including
liberal use of whitespace (short paragraphs, separated by whitespace / blank
lines) and minimal use of (obscure?) jargon, abbreviations, acronyms, and
references.
If someone has already responded to a question, decide whether any response
you add will be helpful or not ...
A picture is worth a thousand words. A video (or "audio"): not so much --
divide by 10 for each minute of video (or audio) or create a transcript and
edit it to 10% of the original. (Remember Cicero who did not have enough time
to write a short missive.)
A speaker who uses ahhs, ums, or such may have a real physical or mental
disability, or may be showing disrespect for his listeners by not properly
preparing in advance and thinking before speaking. (That speaker might have
been "trained" to do this by being interrupted often if he pauses.)
A radio (or TV) station which broadcasts speakers with high pitched voices (or
very low pitched / gravelly voices) (which older people might not be able to
hear properly) disrespects its listeners. Likewise if it broadcasts
extraneous or disturbing sounds (like gunfire or crying), or broadcasts
speakers using their native language (with or without an overdubbed
translation).
| A news broadcast or snippet thereof which ends with the correspondent's name
instead of a recap of at least some key point(s) of the story does a
disservice to its (casual) listeners.
A person who writes a sig this long probably has issues and disrespects (and
offends) a large number of readers. ;-)
