xtaguid socket

F/NetworkStats( 1252): problem reading network stats
F/NetworkStats( 1252): java.lang.IllegalStateException: problem parsing line: null
F/NetworkStats( 1252): 	at com.android.internal.net.NetworkStatsFactory.readNetworkStatsDetail(NetworkStatsFactory.java:313)
F/NetworkStats( 1252): 	at com.android.server.NetworkManagementService.getNetworkStatsUidDetail(NetworkManagementService.java:1271)
F/NetworkStats( 1252): 	at com.android.server.net.NetworkStatsService.performPollLocked(NetworkStatsService.java:810)
F/NetworkStats( 1252): 	at com.android.server.net.NetworkStatsService.updateIfacesLocked(NetworkStatsService.java:721)
F/NetworkStats( 1252): 	at com.android.server.net.NetworkStatsService.updateIfaces(NetworkStatsService.java:699)
F/NetworkStats( 1252): 	at com.android.server.net.NetworkStatsService.access$000(NetworkStatsService.java:128)
F/NetworkStats( 1252): 	at com.android.server.net.NetworkStatsService$8.handleMessage(NetworkStatsService.java:1546)
F/NetworkStats( 1252): 	at android.os.Handler.dispatchMessage(Handler.java:95)
F/NetworkStats( 1252): 	at android.os.Looper.loop(Looper.java:137)
F/NetworkStats( 1252): 	at android.os.HandlerThread.run(HandlerThread.java:60)
F/NetworkStats( 1252): Caused by: java.io.FileNotFoundException: /proc/net/xt_qtaguid/stats: open failed: ENOENT (No such file or directory)
F/NetworkStats( 1252): 	at libcore.io.IoBridge.open(IoBridge.java:406)
F/NetworkStats( 1252): 	at java.io.FileInputStream.<init>(FileInputStream.java:78)
F/NetworkStats( 1252): 	at java.io.FileReader.<init>(FileReader.java:42)
F/NetworkStats( 1252): 	at com.android.internal.net.NetworkStatsFactory.readNetworkStatsDetail(NetworkStatsFactory.java:272)
F/NetworkStats( 1252): 	... 9 more
F/NetworkStats( 1252): Caused by: libcore.io.ErrnoException: open failed: ENOENT (No such file or directory)
F/NetworkStats( 1252): 	at libcore.io.Posix.open(Native Method)
F/NetworkStats( 1252): 	at libcore.io.BlockGuardOs.open(BlockGuardOs.java:98)
F/NetworkStats( 1252): 	at libcore.io.IoBridge.open(IoBridge.java:390)
F/NetworkStats( 1252): 	... 12 more