Robert Greenwalt 8beff9586f Stop using shared DUN APN when tethering stops.
Even if other people are sharing the connection (ie, carrier wants
default and tethered traffic on the same APN) stop using
a carrier-described APN when the tethering stops.

bug:5525764
Change-Id: I95ed2aaed4d79519d233a62cf2945edead8114bc
2012-01-03 16:32:04 -08:00
..