On Fri, Jan 3, 2020 at 2:18 PM William Herrin <bill@herrin.us> wrote:

AFAIK, that's not correct. T-Mobile does provide IPv4 *on the device*
but translates it to IPv6 (464xlat) before the packets leave the
device for the network.

If only for that hotspot which I think is IPv4 only.   
--
Joe Hamelin, W7COM, Tulalip, WA, +1 (360) 474-7474