diff --git a/framework/src/android/net/IpPrefix.java b/framework/src/android/net/IpPrefix.java
index bcb65fab85..d2ee7d13b0 100644
--- a/framework/src/android/net/IpPrefix.java
+++ b/framework/src/android/net/IpPrefix.java
@@ -24,6 +24,8 @@ import android.os.Parcel;
 import android.os.Parcelable;
 import android.util.Pair;
 
+import com.android.net.module.util.NetUtils;
+
 import java.net.Inet4Address;
 import java.net.Inet6Address;
 import java.net.InetAddress;
@@ -59,7 +61,7 @@ public final class IpPrefix implements Parcelable {
             throw new IllegalArgumentException(
                     "IpPrefix has " + address.length + " bytes which is neither 4 nor 16");
         }
-        NetworkUtils.maskRawAddress(address, prefixLength);
+        NetUtils.maskRawAddress(address, prefixLength);
     }
 
     /**
@@ -190,7 +192,7 @@ public final class IpPrefix implements Parcelable {
         if (addrBytes == null || addrBytes.length != this.address.length) {
             return false;
         }
-        NetworkUtils.maskRawAddress(addrBytes, prefixLength);
+        NetUtils.maskRawAddress(addrBytes, prefixLength);
         return Arrays.equals(this.address, addrBytes);
     }
 
@@ -204,7 +206,7 @@ public final class IpPrefix implements Parcelable {
     public boolean containsPrefix(@NonNull IpPrefix otherPrefix) {
         if (otherPrefix.getPrefixLength() < prefixLength) return false;
         final byte[] otherAddress = otherPrefix.getRawAddress();
-        NetworkUtils.maskRawAddress(otherAddress, prefixLength);
+        NetUtils.maskRawAddress(otherAddress, prefixLength);
         return Arrays.equals(otherAddress, address);
     }
 
diff --git a/framework/src/android/net/NetworkUtils.java b/framework/src/android/net/NetworkUtils.java
index 8be4af7b13..9ccb04a44a 100644
--- a/framework/src/android/net/NetworkUtils.java
+++ b/framework/src/android/net/NetworkUtils.java
@@ -29,7 +29,6 @@ import java.math.BigInteger;
 import java.net.Inet4Address;
 import java.net.InetAddress;
 import java.net.SocketException;
-import java.net.UnknownHostException;
 import java.util.Locale;
 import java.util.TreeSet;
 
@@ -231,46 +230,6 @@ public class NetworkUtils {
         return InetAddress.parseNumericAddress(addrString);
     }
 
-    /**
-     *  Masks a raw IP address byte array with the specified prefix length.
-     */
-    public static void maskRawAddress(byte[] array, int prefixLength) {
-        if (prefixLength < 0 || prefixLength > array.length * 8) {
-            throw new RuntimeException("IP address with " + array.length +
-                    " bytes has invalid prefix length " + prefixLength);
-        }
-
-        int offset = prefixLength / 8;
-        int remainder = prefixLength % 8;
-        byte mask = (byte)(0xFF << (8 - remainder));
-
-        if (offset < array.length) array[offset] = (byte)(array[offset] & mask);
-
-        offset++;
-
-        for (; offset < array.length; offset++) {
-            array[offset] = 0;
-        }
-    }
-
-    /**
-     * Get InetAddress masked with prefixLength.  Will never return null.
-     * @param address the IP address to mask with
-     * @param prefixLength the prefixLength used to mask the IP
-     */
-    public static InetAddress getNetworkPart(InetAddress address, int prefixLength) {
-        byte[] array = address.getAddress();
-        maskRawAddress(array, prefixLength);
-
-        InetAddress netPart = null;
-        try {
-            netPart = InetAddress.getByAddress(array);
-        } catch (UnknownHostException e) {
-            throw new RuntimeException("getNetworkPart error - " + e.toString());
-        }
-        return netPart;
-    }
-
     /**
      * Returns the implicit netmask of an IPv4 address, as was the custom before 1993.
      */