diff --git a/kotlin-mbedtls/src/main/kotlin/org/opencoap/ssl/transport/DtlsServer.kt b/kotlin-mbedtls/src/main/kotlin/org/opencoap/ssl/transport/DtlsServer.kt
index a379f57b..3beff7a9 100644
--- a/kotlin-mbedtls/src/main/kotlin/org/opencoap/ssl/transport/DtlsServer.kt
+++ b/kotlin-mbedtls/src/main/kotlin/org/opencoap/ssl/transport/DtlsServer.kt
@@ -50,10 +50,6 @@ class DtlsServer(
     private val sessions = mutableMapOf<InetSocketAddress, DtlsState>()
     private val cidSize = sslConfig.cidSupplier.next().size
     val numberOfSessions get() = sessions.size
-    fun getSessionCid(inet: InetSocketAddress): ByteArray? {
-        val dtlsState = sessions[inet] as? DtlsSession
-        return dtlsState?.sessionContext?.cid
-    }
 
     fun handleReceived(adr: InetSocketAddress, buf: ByteBuffer): ReceiveResult {
         val cid by lazy { SslContext.peekCID(cidSize, buf) }
diff --git a/kotlin-mbedtls/src/main/kotlin/org/opencoap/ssl/transport/DtlsServerTransport.kt b/kotlin-mbedtls/src/main/kotlin/org/opencoap/ssl/transport/DtlsServerTransport.kt
index ab60541e..5ca80aa7 100644
--- a/kotlin-mbedtls/src/main/kotlin/org/opencoap/ssl/transport/DtlsServerTransport.kt
+++ b/kotlin-mbedtls/src/main/kotlin/org/opencoap/ssl/transport/DtlsServerTransport.kt
@@ -114,6 +114,4 @@ class DtlsServerTransport private constructor(
         executor.supply {
             dtlsServer.putSessionAuthenticationContext(adr, key, value)
         }
-
-    fun getSessionCid(adr: InetSocketAddress) = executor.supply { dtlsServer.getSessionCid(adr) }
 }
diff --git a/kotlin-mbedtls/src/test/kotlin/org/opencoap/ssl/transport/DtlsServerTransportTest.kt b/kotlin-mbedtls/src/test/kotlin/org/opencoap/ssl/transport/DtlsServerTransportTest.kt
index 6fea7730..887db82d 100644
--- a/kotlin-mbedtls/src/test/kotlin/org/opencoap/ssl/transport/DtlsServerTransportTest.kt
+++ b/kotlin-mbedtls/src/test/kotlin/org/opencoap/ssl/transport/DtlsServerTransportTest.kt
@@ -24,7 +24,6 @@ import org.awaitility.kotlin.await
 import org.junit.jupiter.api.AfterEach
 import org.junit.jupiter.api.Assertions.assertEquals
 import org.junit.jupiter.api.Assertions.assertFalse
-import org.junit.jupiter.api.Assertions.assertNull
 import org.junit.jupiter.api.Assertions.assertTrue
 import org.junit.jupiter.api.Test
 import org.opencoap.ssl.CertificateAuth
@@ -438,15 +437,6 @@ class DtlsServerTransportTest {
         assertTrue(server.executor() is ScheduledThreadPoolExecutor)
     }
 
-    @Test
-    fun `should not return cid`() {
-        server = DtlsServerTransport.create(conf, lifecycleCallbacks = sslLifecycleCallbacks).listen(echoHandler)
-        val client = DtlsTransmitter.connect(server, clientConfig).await()
-        client.send("hello!")
-        val cid = server.getSessionCid(localAddress(1234)).await()
-        assertNull(cid)
-    }
-
     @Test
     fun `should set and use session context`() {
         // given