how to fix at java.net.InetAddress.getByName(InetAddress.java:289 error

09-03 07:02:11.087: W/System.err(915): 	at dalvik.system.NativeStart.main(Native Method)
09-03 07:02:18.659: W/System.err(915): android.os.NetworkOnMainThreadException
09-03 07:02:18.687: W/System.err(915): 	at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1117)
09-03 07:02:18.687: W/System.err(915): 	at java.net.InetAddress.lookupHostByName(InetAddress.java:385)
09-03 07:02:18.698: W/System.err(915): 	at java.net.InetAddress.getAllByNameImpl(InetAddress.java:236)
09-03 07:02:18.707: W/System.err(915): 	at java.net.InetAddress.getByName(InetAddress.java:289)
09-03 07:02:18.707: W/System.err(915): 	at com.example.gpstracker.AndroidStartServiceOnBoot$gpstrack$1$1.run(AndroidStartServiceOnBoot.java:314)
09-03 07:02:18.707: W/System.err(915): 	at android.os.Handler.handleCallback(Handler.java:725)
09-03 07:02:18.707: W/System.err(915): 	at android.os.Handler.dispatchMessage(Handler.java:92)
09-03 07:02:18.707: W/System.err(915): 	at android.os.Looper.loop(Looper.java:137)
09-03 07:02:18.728: W/System.err(915): 	at android.app.ActivityThread.main(ActivityThread.java:5041)
09-03 07:02:18.728: W/System.err(915): 	at java.lang.reflect.Method.invokeNative(Native Method)
09-03 07:02:18.737: W/System.err(915): 	at java.lang.reflect.Method.invoke(Method.java:511)
09-03 07:02:18.737: W/System.err(915): 	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
09-03 07:02:18.737: W/System.err(915): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)