tree cabbe98c96fe5929972a62db8ccf60c90b60c3bf
parent d63379ab2ec99f97bdee2390f34b1e19711941a4
author Lorenzo Colitti <lorenzo@google.com> 1411188467 +0900
committer Lorenzo Colitti <lorenzo@google.com> 1411484603 +0900

Only stop/start clatd if necessary.

Previously we would restart clatd on every LinkProperties
change, which now happens every time we switch radio technology
(e.g., LTE to HSPA). We also would not stop it if the link got
an IPv4 address.

Bug: 15024258
Bug: 17186694
Bug: 17569702
Change-Id: I65cfcd5e7acec8ea1a12392a59dabd668c58490f