Data Usage Docs in Android 4.0 for Systems Integrators.

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+# Network interface statistics #
+- [Overview](/tech/datausage/iface-overview.html)
+- [Excluding network types from data usage](/tech/datausage/excluding-network-types.html)
+- [Tethering data](/tech/datausage/tethering-data.html)
+- [Usage cycle reset dates](/tech/datausage/usage-cycle-resets-dates.html)
+
+# The xt_qtaguid netfilter kernel module #
+- [Overview](/tech/datausage/kernel-overview.html)
+- [Data usage tags explained](/tech/datausage/tags-explained.html)
+- [Kernel changes](/tech/datausage/kernel-changes.html)
+