Me and my Verizon Jetpack 4G LTE access point

Recently, I got rid of my Sprint 3G/4G Overdrive access point and replaced it with a Verizon Jetpack 4G LTE access point.  This thing is really fast and seems to get great coverage in a lot of place.  However, the other day I started to have problems with it disconnecting and reconnecting repeatedly (on the order of 2 to 3 times per minute).  Each time it disconnected, my VPN connection (if I was using it) would drop and in general the device was unusable.

I did some poking around and noticed that the device enables IPv6 by default.  Since my machine is configured for DirectAccess (which uses IPv6 transition technologies) I wondered if turning off IPv6 on the device might help.  I figured that it couldn't break anything since nothing on my machine would expect IPv6 to be available, so I went into the configuration and disabled it.

Sure enough, since I made that change, my connection has been rock solid and the disconnections are gone.  I am not sure what exactly was happening, but now I can connect to the Internet, DirectAccess comes up as expected and life on the road is good again.