resotre mtu to 9000

Author: starifly

app/src/main/java/io/nekohasekai/sagernet/database/DataStore.kt

@@ -109,7 +109,7 @@ object DataStore : OnPreferenceDataStoreChangeListener {
     var trafficSniffing by configurationStore.stringToInt(Key.TRAFFIC_SNIFFING) { 1 }
     var resolveDestination by configurationStore.boolean(Key.RESOLVE_DESTINATION)
 
-    var mtu by configurationStore.stringToInt(Key.MTU) { 1500 }
+    var mtu by configurationStore.stringToInt(Key.MTU) { 9000 }
 
     var bypassLan by configurationStore.boolean(Key.BYPASS_LAN)
     var bypassLanInCore by configurationStore.boolean(Key.BYPASS_LAN_IN_CORE)

app/src/main/res/xml/global_preferences.xml

@@ -45,7 +45,7 @@
             app:title="@string/tun_implementation"
             app:useSimpleSummaryProvider="true" />
         <moe.matsuri.nb4a.ui.MTUPreference
-            app:defaultValue="1500"
+            app:defaultValue="9000"
             app:entries="@array/mtu_select"
             app:entryValues="@array/mtu_select"
             app:icon="@drawable/baseline_public_24"