Let only Ethernet manage ethernet interface up and down

When LAN link is changed for using ethernet interface from Ethernet tethering to Ethernet,
there is confiict as Ethernet Tethering is trying to make ethernet link down and Ethernet is trying to make ethernet link up.

So, this would make Ethernet only manage ethernet interface link state.

Test: manual
Bug: 130840861
Change-Id: I1cd40ae764bdeecbb59e3889e9399b7f4b05f9cc

1 files changed, 3 insertions, 2 deletions

diff --git a/packages/Tethering/src/android/net/ip/IpServer.java b/packages/Tethering/src/android/net/ip/IpServer.java
index 1671dda4bd57..4cc35b42d93a 100644
--- a/packages/Tethering/src/android/net/ip/IpServer.java
+++ b/packages/Tethering/src/android/net/ip/IpServer.java
@@ -615,8 +615,9 @@ public class IpServer extends StateMachine {
 
         final Boolean setIfaceUp;
         if (mInterfaceType == TetheringManager.TETHERING_WIFI
-                || mInterfaceType == TetheringManager.TETHERING_WIFI_P2P) {
-            // The WiFi stack has ownership of the interface up/down state.
+                || mInterfaceType == TetheringManager.TETHERING_WIFI_P2P
+                || mInterfaceType == TetheringManager.TETHERING_ETHERNET) {
+            // The WiFi and Ethernet stack has ownership of the interface up/down state.
             // It is unclear whether the Bluetooth or USB stacks will manage their own
             // state.
             setIfaceUp = null;