diff --git a/sim/rfnoc/Makefile.srcs b/sim/rfnoc/Makefile.srcs
index 8313895..0404870 100644
--- a/sim/rfnoc/Makefile.srcs
+++ b/sim/rfnoc/Makefile.srcs
@@ -29,6 +29,7 @@ PkgEthernet.sv \
 PkgChdrData.sv \
 ../../lib/rfnoc/core/rfnoc_chdr_utils_pkg.sv \
 PkgChdrBfm.sv \
+PkgChdrUtils.sv \
 PkgAxisCtrlBfm.sv \
 PkgRfnocItemUtils.sv \
 PkgCtrlIfaceBfm.sv \
diff --git a/sim/rfnoc/PkgChdrUtils.sv b/sim/rfnoc/PkgChdrUtils.sv
new file mode 100644
index 0000000..04ecb17
--- /dev/null
+++ b/sim/rfnoc/PkgChdrUtils.sv
@@ -0,0 +1,108 @@
+//
+// Copyright 2025 Ettus Research, A National Instruments Company
+//
+// SPDX-License-Identifier: LGPL-3.0-or-later
+//
+// Module: PkgChdrData
+//
+// Description:
+//
+//   This package exists for backwards compatibility with older testbenches
+//   that reference it. It imports then exports following:
+//
+//     rfnoc_chdr_utils_pkg::*
+//     PkgChdrData::ChdrData
+//     PkgChdrBfm::chdr_mgmt_t
+//
+//   New testbenches should reference these directly. These were reorganized
+//   because most of them synthesizable and not for simulation only.
+//
+
+
+package PkgChdrUtils;
+
+  import rfnoc_chdr_utils_pkg::*;
+  export rfnoc_chdr_utils_pkg::chdr_pkt_type_t;
+  export rfnoc_chdr_utils_pkg::CHDR_MANAGEMENT;
+  export rfnoc_chdr_utils_pkg::CHDR_STRM_STATUS;
+  export rfnoc_chdr_utils_pkg::CHDR_STRM_CMD;
+  export rfnoc_chdr_utils_pkg::CHDR_RESERVED_0;
+  export rfnoc_chdr_utils_pkg::CHDR_CONTROL;
+  export rfnoc_chdr_utils_pkg::CHDR_RESERVED_1;
+  export rfnoc_chdr_utils_pkg::CHDR_DATA_NO_TS;
+  export rfnoc_chdr_utils_pkg::CHDR_DATA_WITH_TS;
+  export rfnoc_chdr_utils_pkg::chdr_vc_t;
+  export rfnoc_chdr_utils_pkg::chdr_eob_t;
+  export rfnoc_chdr_utils_pkg::chdr_eov_t;
+  export rfnoc_chdr_utils_pkg::chdr_num_mdata_t;
+  export rfnoc_chdr_utils_pkg::chdr_seq_num_t;
+  export rfnoc_chdr_utils_pkg::chdr_length_t;
+  export rfnoc_chdr_utils_pkg::chdr_epid_t;
+  export rfnoc_chdr_utils_pkg::chdr_timestamp_t;
+  export rfnoc_chdr_utils_pkg::chdr_context_type_t;
+  export rfnoc_chdr_utils_pkg::ctrl_word_t;
+  export rfnoc_chdr_utils_pkg::ctrl_opcode_t;
+  export rfnoc_chdr_utils_pkg::CTRL_OP_SLEEP;
+  export rfnoc_chdr_utils_pkg::CTRL_OP_WRITE;
+  export rfnoc_chdr_utils_pkg::CTRL_OP_READ;
+  export rfnoc_chdr_utils_pkg::CTRL_OP_WRITE_READ;
+  export rfnoc_chdr_utils_pkg::CTRL_OP_RESERVED_0;
+  export rfnoc_chdr_utils_pkg::CTRL_OP_RESERVED_1;
+  export rfnoc_chdr_utils_pkg::CTRL_OP_RESERVED_2;
+  export rfnoc_chdr_utils_pkg::CTRL_OP_RESERVED_3;
+  export rfnoc_chdr_utils_pkg::CTRL_OP_RESERVED_4;
+  export rfnoc_chdr_utils_pkg::CTRL_OP_RESERVED_5;
+  export rfnoc_chdr_utils_pkg::ctrl_status_t;
+  export rfnoc_chdr_utils_pkg::CTRL_STS_OKAY;
+  export rfnoc_chdr_utils_pkg::CTRL_STS_CMDERR;
+  export rfnoc_chdr_utils_pkg::CTRL_STS_TSERR;
+  export rfnoc_chdr_utils_pkg::CTRL_STS_WARNING;
+  export rfnoc_chdr_utils_pkg::ctrl_seq_num_t;
+  export rfnoc_chdr_utils_pkg::ctrl_num_data_t;
+  export rfnoc_chdr_utils_pkg::ctrl_port_t;
+  export rfnoc_chdr_utils_pkg::ctrl_byte_en_t;
+  export rfnoc_chdr_utils_pkg::ctrl_address_t;
+  export rfnoc_chdr_utils_pkg::chdr_strs_status_t;
+  export rfnoc_chdr_utils_pkg::STRS_OKAY;
+  export rfnoc_chdr_utils_pkg::STRS_CMDERR;
+  export rfnoc_chdr_utils_pkg::STRS_SEQERR;
+  export rfnoc_chdr_utils_pkg::STRS_DATAERR;
+  export rfnoc_chdr_utils_pkg::STRS_RTERR;
+  export rfnoc_chdr_utils_pkg::chdr_strc_opcode_t;
+  export rfnoc_chdr_utils_pkg::STRC_INIT;
+  export rfnoc_chdr_utils_pkg::STRC_PING;
+  export rfnoc_chdr_utils_pkg::STRC_RESYNC;
+  export rfnoc_chdr_utils_pkg::chdr_mgmt_width_t;
+  export rfnoc_chdr_utils_pkg::CHDR_W_64;
+  export rfnoc_chdr_utils_pkg::CHDR_W_128;
+  export rfnoc_chdr_utils_pkg::CHDR_W_256;
+  export rfnoc_chdr_utils_pkg::CHDR_W_512;
+  export rfnoc_chdr_utils_pkg::CHDR_W_INVALID;
+  export rfnoc_chdr_utils_pkg::translate_chdr_w;
+  export rfnoc_chdr_utils_pkg::translate_bit_w;
+  export rfnoc_chdr_utils_pkg::chdr_mgmt_opcode_t;
+  export rfnoc_chdr_utils_pkg::MGMT_OP_NOP;
+  export rfnoc_chdr_utils_pkg::MGMT_OP_ADVERTISE;
+  export rfnoc_chdr_utils_pkg::MGMT_OP_SEL_DEST;
+  export rfnoc_chdr_utils_pkg::MGMT_OP_RETURN;
+  export rfnoc_chdr_utils_pkg::MGMT_OP_INFO_REQ;
+  export rfnoc_chdr_utils_pkg::MGMT_OP_INFO_RESP;
+  export rfnoc_chdr_utils_pkg::MGMT_OP_CFG_WR_REQ;
+  export rfnoc_chdr_utils_pkg::MGMT_OP_CFG_RD_REQ;
+  export rfnoc_chdr_utils_pkg::MGMT_OP_CFG_RD_RESP;
+  export rfnoc_chdr_utils_pkg::chdr_header_t;
+  export rfnoc_chdr_utils_pkg::axis_ctrl_header_t;
+  export rfnoc_chdr_utils_pkg::ctrl_op_word_t;
+  export rfnoc_chdr_utils_pkg::chdr_ctrl_header_t;
+  export rfnoc_chdr_utils_pkg::chdr_str_status_t;
+  export rfnoc_chdr_utils_pkg::chdr_str_command_t;
+  export rfnoc_chdr_utils_pkg::chdr_mgmt_header_t;
+  export rfnoc_chdr_utils_pkg::chdr_mgmt_op_t;
+
+  import PkgChdrData::*;
+  export PkgChdrData::ChdrData;
+
+  import PkgChdrBfm::*;
+  export PkgChdrBfm::chdr_mgmt_t;
+
+endpackage : PkgChdrUtils
\ No newline at end of file