Revert "DNS: make the same ip type DNS query as the interface address type"

This reverts commit 53c2af91d6bc2e44c53aea98a06a76834e59fe09.
The reverted commit broke vpn connect.

Change-Id: I7e80dcf1fa1ba86effbe7716d50a5a08be7898ad
Merge branch 'cm-11.0' of git://github.com/CyanogenMod/android_bionic into cm-11.0