Improve comment in ssl_parse_record_header()
@@ -4870,7 +4870,8 @@ static int ssl_parse_record_header( mbedtls_ssl_context *ssl )
* ProtocolVersion version;
* uint16 epoch;
* uint48 sequence_number;
- * opaque cid[cid_length]; // New field
+ * opaque cid[cid_length]; // Additional field compared to
+ * // default DTLS record format
* uint16 length;
* opaque enc_content[DTLSCiphertext.length];
* } DTLSCiphertext;
