diff --git a/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java b/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java
index 1d88d6e..aa2dd4c 100644
--- a/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java
+++ b/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java
@@ -208,6 +208,9 @@
      */
     public static final int INFINITE_LEASE = 0xffffffff;
     public static final int DHCP4_CLIENT_PORT = 68;
+    // The maximum length of a DHCP packet that can be constructed.
+    public static final int DHCP_MAX_LENGTH = 1500;
+    public static final int DHCP_MAX_OPTION_LEN = 255;
 
     /**
      * DHCPv6 constants.