diff --git a/framework/api/module-lib-current.txt b/framework/api/module-lib-current.txt
index cd96a1b..f2f5c1b 100644
--- a/framework/api/module-lib-current.txt
+++ b/framework/api/module-lib-current.txt
@@ -176,10 +176,12 @@
   }
 
   public final class VpnTransportInfo implements android.os.Parcelable android.net.TransportInfo {
-    ctor public VpnTransportInfo(int);
+    ctor public VpnTransportInfo(int, @Nullable String);
     method public int describeContents();
+    method @NonNull public android.net.VpnTransportInfo makeCopy(long);
     method public void writeToParcel(@NonNull android.os.Parcel, int);
     field @NonNull public static final android.os.Parcelable.Creator<android.net.VpnTransportInfo> CREATOR;
+    field @Nullable public final String sessionId;
     field public final int type;
   }
 
diff --git a/framework/src/android/net/VpnTransportInfo.java b/framework/src/android/net/VpnTransportInfo.java
index cd8f4c0..ba83a44 100644
--- a/framework/src/android/net/VpnTransportInfo.java
+++ b/framework/src/android/net/VpnTransportInfo.java
@@ -17,11 +17,14 @@
 package android.net;
 
 import static android.annotation.SystemApi.Client.MODULE_LIBRARIES;
+import static android.net.NetworkCapabilities.REDACT_FOR_NETWORK_SETTINGS;
 
 import android.annotation.NonNull;
+import android.annotation.Nullable;
 import android.annotation.SystemApi;
 import android.os.Parcel;
 import android.os.Parcelable;
+import android.text.TextUtils;
 
 import java.util.Objects;
 
@@ -38,8 +41,26 @@
     /** Type of this VPN. */
     public final int type;
 
-    public VpnTransportInfo(int type) {
+    @Nullable
+    public final String sessionId;
+
+    @Override
+    public long getApplicableRedactions() {
+        return REDACT_FOR_NETWORK_SETTINGS;
+    }
+
+    /**
+     * Create a copy of a {@link VpnTransportInfo} with the sessionId redacted if necessary.
+     */
+    @NonNull
+    public VpnTransportInfo makeCopy(long redactions) {
+        return new VpnTransportInfo(type,
+            ((redactions & REDACT_FOR_NETWORK_SETTINGS) != 0) ? null : sessionId);
+    }
+
+    public VpnTransportInfo(int type, @Nullable String sessionId) {
         this.type = type;
+        this.sessionId = sessionId;
     }
 
     @Override
@@ -47,17 +68,17 @@
         if (!(o instanceof VpnTransportInfo)) return false;
 
         VpnTransportInfo that = (VpnTransportInfo) o;
-        return this.type == that.type;
+        return (this.type == that.type) && TextUtils.equals(this.sessionId, that.sessionId);
     }
 
     @Override
     public int hashCode() {
-        return Objects.hash(type);
+        return Objects.hash(type, sessionId);
     }
 
     @Override
     public String toString() {
-        return String.format("VpnTransportInfo{type=%d}", type);
+        return String.format("VpnTransportInfo{type=%d, sessionId=%s}", type, sessionId);
     }
 
     @Override
@@ -68,12 +89,13 @@
     @Override
     public void writeToParcel(@NonNull Parcel dest, int flags) {
         dest.writeInt(type);
+        dest.writeString(sessionId);
     }
 
     public static final @NonNull Creator<VpnTransportInfo> CREATOR =
             new Creator<VpnTransportInfo>() {
         public VpnTransportInfo createFromParcel(Parcel in) {
-            return new VpnTransportInfo(in.readInt());
+            return new VpnTransportInfo(in.readInt(), in.readString());
         }
         public VpnTransportInfo[] newArray(int size) {
             return new VpnTransportInfo[size];
diff --git a/tests/net/java/android/net/VpnTransportInfoTest.java b/tests/net/java/android/net/VpnTransportInfoTest.java
index b7a42ec..fee65f0 100644
--- a/tests/net/java/android/net/VpnTransportInfoTest.java
+++ b/tests/net/java/android/net/VpnTransportInfoTest.java
@@ -16,6 +16,9 @@
 
 package android.net;
 
+import static android.net.NetworkCapabilities.REDACT_FOR_NETWORK_SETTINGS;
+import static android.net.NetworkCapabilities.REDACT_NONE;
+
 import static com.android.testutils.ParcelUtils.assertParcelSane;
 
 import static org.junit.Assert.assertEquals;
@@ -33,23 +36,33 @@
 
     @Test
     public void testParceling() {
-        VpnTransportInfo v = new VpnTransportInfo(VpnManager.TYPE_VPN_PLATFORM);
-        assertParcelSane(v, 1 /* fieldCount */);
+        VpnTransportInfo v = new VpnTransportInfo(VpnManager.TYPE_VPN_PLATFORM, "12345");
+        assertParcelSane(v, 2 /* fieldCount */);
     }
 
     @Test
     public void testEqualsAndHashCode() {
-        VpnTransportInfo v1 = new VpnTransportInfo(VpnManager.TYPE_VPN_PLATFORM);
-        VpnTransportInfo v2 = new VpnTransportInfo(VpnManager.TYPE_VPN_SERVICE);
-        VpnTransportInfo v3 = new VpnTransportInfo(VpnManager.TYPE_VPN_PLATFORM);
-        VpnTransportInfo v4 = new VpnTransportInfo(VpnManager.TYPE_VPN_LEGACY);
-        VpnTransportInfo v5 = new VpnTransportInfo(VpnManager.TYPE_VPN_OEM);
+        String session1 = "12345";
+        String session2 = "6789";
+        VpnTransportInfo v11 = new VpnTransportInfo(VpnManager.TYPE_VPN_PLATFORM, session1);
+        VpnTransportInfo v12 = new VpnTransportInfo(VpnManager.TYPE_VPN_SERVICE, session1);
+        VpnTransportInfo v13 = new VpnTransportInfo(VpnManager.TYPE_VPN_PLATFORM, session1);
+        VpnTransportInfo v14 = new VpnTransportInfo(VpnManager.TYPE_VPN_LEGACY, session1);
+        VpnTransportInfo v15 = new VpnTransportInfo(VpnManager.TYPE_VPN_OEM, session1);
+        VpnTransportInfo v21 = new VpnTransportInfo(VpnManager.TYPE_VPN_LEGACY, session2);
 
-        assertNotEquals(v1, v2);
-        assertNotEquals(v3, v4);
-        assertNotEquals(v4, v5);
+        VpnTransportInfo v31 = v11.makeCopy(REDACT_FOR_NETWORK_SETTINGS);
+        VpnTransportInfo v32 = v13.makeCopy(REDACT_FOR_NETWORK_SETTINGS);
 
-        assertEquals(v1, v3);
-        assertEquals(v1.hashCode(), v3.hashCode());
+        assertNotEquals(v11, v12);
+        assertNotEquals(v13, v14);
+        assertNotEquals(v14, v15);
+        assertNotEquals(v14, v21);
+
+        assertEquals(v11, v13);
+        assertEquals(v31, v32);
+        assertEquals(v11.hashCode(), v13.hashCode());
+        assertEquals(REDACT_FOR_NETWORK_SETTINGS, v32.getApplicableRedactions());
+        assertEquals(session1, v15.makeCopy(REDACT_NONE).sessionId);
     }
-}
\ No newline at end of file
+}
diff --git a/tests/net/java/com/android/server/ConnectivityServiceTest.java b/tests/net/java/com/android/server/ConnectivityServiceTest.java
index daf4e61..270941f 100644
--- a/tests/net/java/com/android/server/ConnectivityServiceTest.java
+++ b/tests/net/java/com/android/server/ConnectivityServiceTest.java
@@ -1233,10 +1233,12 @@
             if (mAgentRegistered) throw new IllegalStateException("already registered");
             updateState(NetworkInfo.DetailedState.CONNECTING, "registerAgent");
             mConfig = new VpnConfig();
+            mConfig.session = "MySession12345";
             setUids(uids);
             if (!isAlwaysMetered) mNetworkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED);
             mInterface = VPN_IFNAME;
-            mNetworkCapabilities.setTransportInfo(new VpnTransportInfo(getActiveVpnType()));
+            mNetworkCapabilities.setTransportInfo(new VpnTransportInfo(getActiveVpnType(),
+                    mConfig.session));
             mMockNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_VPN, lp,
                     mNetworkCapabilities);
             mMockNetworkAgent.waitForIdle(TIMEOUT_MS);