Since optimistic addresses are useable upon kernel notification
there is no need for this extra connectivity delay.
---
This functionality was originally submitted in ag/572619. Owing
to issues with bind()ing to optimistic addresses (see b/18609055)
this was reverted in ag/598673.
This reverts the revert. :-)
Bug: 17769720
Change-Id: Ibee490b2af72050693b6bd748193f51e312ca527
b883659514