On Thu, Feb 19, 2026 at 05:20:25PM +0000, Niall O'Reilly wrote: > On 19 Feb 2026, at 15:40, Richard Owlett wrote: > > > T-mobile's salesman was the only one that: > > 1. actually listened to what what I wanted to accomplish. > > 2. did *NOT* tell me I had no choice but a "smartphone"(sic). > > He offered a WiFi Hotspot which I treat similarly to my old acoustic > > coupler (the WiFi portion disabled by software ;). > > T-mobile offering varies by geographical region. > It may be available in yours on request, rather than by default. > It's probably worth asking, if you want to learn something about > IPv6. Some of what I learned about IPv4 turned out not to be > transferable. YMMV. > > In Germany, IPv6 just works on their cellular network. > I know this from roaming there from my home network in Ireland.
This from Germany, behind a Telekom DSL "modem"/router (I think
Deutsche Telekom is how we spell T Mobile over here); I snipped
out the boring stuff (link-local, v4, lo and that):
tomas@caliban:~$ ip address show
[...]
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP
group default qlen 1000
link/ether e4:b3:18:ca:29:84 brd ff:ff:ff:ff:ff:ff
altname wlp4s0
[...]
inet6 2003:eb:170c:37f9:e6b3:18ff:feca:2984/64 scope global dynamic
mngtmpaddr
valid_lft 172777sec preferred_lft 86377sec
so this lowly Linux laptop is picking up a global IPv6 from the
router. And it points to...
tomas@caliban:~$ host 2003:eb:170c:37f9:e6b3:18ff:feca:2984
4.8.9.2.a.c.e.f.f.f.8.1.3.b.6.e.9.f.7.3.c.0.7.1.b.e.0.0.3.0.0.2.Ip6.aRpA
domain name pointer p200300eb170c37f9e6b318fffeca2984.dip0.t-ipconnect.de.
(sorry for the long line: "dialup" IPv6 reverse DNS names are
like that).
The domain "t-ipconnect.de" belongs to Deutsche Telekom, afaik (whois
could be a bit more informative, though).
Cheers
--
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