I am unable to turn IPv6 off in my Jetpack LAN settings. This is a huge problem for me, since I need access to a site which only supports DNS over IPv4.
I've reset the radio button several times; each time, the access point reboots, but the radio button is reset to IPv6 afterwards.
There are three models of the Ellipsis Jetpack: MHS700L, MHS800L and MHS815L.
They were/are available under both Prepaid and postpay service plans.
The 800 has new firmware released 10/28/2016:
Software Version: 22.214.171.124-25569.
If this is your firmware, did you RESET the Jetpack after the update?
Call Customer Service (800) 922-0204, especially if using the latest firmware.
AVALERM, I am sorry to learn that you are having trouble with turning off IPv6 on the jetpack. To research this further for you can you please provide what model device you have?