diff --git a/core/java/android/os/INetworkManagementService.aidl b/core/java/android/os/INetworkManagementService.aidl
index 5d08601ad32d5..f2d67411ef3ac 100644
--- a/core/java/android/os/INetworkManagementService.aidl
+++ b/core/java/android/os/INetworkManagementService.aidl
@@ -295,8 +295,6 @@ interface INetworkManagementService
     void setFirewallUidRules(int chain, in int[] uids, in int[] rules);
     void setFirewallChainEnabled(int chain, boolean enable);
 
-    void addLegacyRouteForNetId(int netId, in RouteInfo routeInfo, int uid);
-
     /**
      * Allow UID to call protect().
      */
diff --git a/services/core/java/com/android/server/NetworkManagementService.java b/services/core/java/com/android/server/NetworkManagementService.java
index cafcdd617f39a..10d6570929ed5 100644
--- a/services/core/java/com/android/server/NetworkManagementService.java
+++ b/services/core/java/com/android/server/NetworkManagementService.java
@@ -1759,27 +1759,6 @@ public class NetworkManagementService extends INetworkManagementService.Stub {
         }
     }
 
-    @Override
-    public void addLegacyRouteForNetId(int netId, RouteInfo routeInfo, int uid) {
-        NetworkStack.checkNetworkStackPermission(mContext);
-
-        final LinkAddress la = routeInfo.getDestinationLinkAddress();
-        final String ifName = routeInfo.getInterface();
-        final String dst = la.toString();
-        final String nextHop;
-
-        if (routeInfo.hasGateway()) {
-            nextHop = routeInfo.getGateway().getHostAddress();
-        } else {
-            nextHop = "";
-        }
-        try {
-            mNetdService.networkAddLegacyRoute(netId, ifName, dst, nextHop, uid);
-        } catch (RemoteException | ServiceSpecificException e) {
-            throw new IllegalStateException(e);
-        }
-    }
-
     @Override
     public void allowProtect(int uid) {
         NetworkStack.checkNetworkStackPermission(mContext);