diff --git a/tests/cts/net/src/android/net/cts/ApfIntegrationTest.kt b/tests/cts/net/src/android/net/cts/ApfIntegrationTest.kt
index a074b67..ea6256a 100644
--- a/tests/cts/net/src/android/net/cts/ApfIntegrationTest.kt
+++ b/tests/cts/net/src/android/net/cts/ApfIntegrationTest.kt
@@ -192,8 +192,8 @@
             futureReply!!.complete(recvbuf.sliceArray(8..<length))
         }
 
-        fun sendPing(data: ByteArray) {
-            require(data.size == 56)
+        fun sendPing(data: ByteArray, payloadSize: Int) {
+            require(data.size == payloadSize)
 
             // rfc4443#section-4.1: Echo Request Message
             //   0                   1                   2                   3
@@ -407,8 +407,9 @@
         readProgram() // wait for install completion
 
         // Assert that initial ping does not get filtered.
-        val data = ByteArray(56).also { Random.nextBytes(it) }
-        packetReader.sendPing(data)
+        val payloadSize = 56
+        val data = ByteArray(payloadSize).also { Random.nextBytes(it) }
+        packetReader.sendPing(data, payloadSize)
         assertThat(packetReader.expectPingReply()).isEqualTo(data)
 
         // Generate an APF program that drops the next ping
@@ -428,7 +429,7 @@
         installProgram(program)
         readProgram() // wait for install completion
 
-        packetReader.sendPing(data)
+        packetReader.sendPing(data, payloadSize)
         packetReader.expectPingDropped()
     }
 
@@ -470,8 +471,9 @@
         readProgram() // wait for install completion
 
         // Trigger the program by sending a ping and waiting on the reply.
-        val data = ByteArray(56).also { Random.nextBytes(it) }
-        packetReader.sendPing(data)
+        val payloadSize = 56
+        val data = ByteArray(payloadSize).also { Random.nextBytes(it) }
+        packetReader.sendPing(data, payloadSize)
         packetReader.expectPingReply()
 
         val readResult = readProgram()
@@ -504,8 +506,9 @@
         installProgram(gen.generate())
         readProgram() // wait for install completion
 
-        val data = ByteArray(56).also { Random.nextBytes(it) }
-        packetReader.sendPing(data)
+        val payloadSize = 56
+        val data = ByteArray(payloadSize).also { Random.nextBytes(it) }
+        packetReader.sendPing(data, payloadSize)
         packetReader.expectPingReply()
 
         var buffer = ByteBuffer.wrap(readProgram(), counterRegion, 4 /* length */)
@@ -513,7 +516,7 @@
 
         Thread.sleep(5100)
 
-        packetReader.sendPing(data)
+        packetReader.sendPing(data, payloadSize)
         packetReader.expectPingReply()
 
         buffer = ByteBuffer.wrap(readProgram(), counterRegion, 4 /* length */)