diff --git a/awscrt/s3.py b/awscrt/s3.py
index 816a718ae..6676fcb3d 100644
--- a/awscrt/s3.py
+++ b/awscrt/s3.py
@@ -302,7 +302,8 @@ def make_request(
             on_headers=None,
             on_body=None,
             on_done=None,
-            on_progress=None):
+            on_progress=None,
+            network_interface_names=None):
         """Create the Request to the the S3 server,
         :attr:`~S3RequestType.GET_OBJECT`/:attr:`~S3RequestType.PUT_OBJECT` requests are split it into multi-part
         requests under the hood for acceleration.
@@ -449,6 +450,8 @@ def make_request(
 
                     *   `**kwargs` (dict): Forward-compatibility kwargs.
 
+            network_interface_names: (Optional[list(str)])
+
         Returns:
             S3Request
         """
@@ -468,7 +471,8 @@ def make_request(
             on_body=on_body,
             on_done=on_done,
             on_progress=on_progress,
-            region=self._region)
+            region=self._region,
+            network_interface_names=network_interface_names)
 
 
 class S3Request(NativeResource):
@@ -505,7 +509,8 @@ def __init__(
             on_body=None,
             on_done=None,
             on_progress=None,
-            region=None):
+            region=None,
+            network_interface_names=None):
         assert isinstance(client, S3Client)
         assert isinstance(request, HttpRequest)
         assert callable(on_headers) or on_headers is None
@@ -513,6 +518,7 @@ def __init__(
         assert callable(on_done) or on_done is None
         assert isinstance(part_size, int) or part_size is None
         assert isinstance(multipart_upload_threshold, int) or multipart_upload_threshold is None
+        assert isinstance(network_interface_names, list) and all(isinstance(name, str) for name in network_interface_names) or network_interface_names is None
 
         if type == S3RequestType.DEFAULT and not operation_name:
             raise ValueError("'operation_name' must be set when using S3RequestType.DEFAULT")
@@ -564,7 +570,8 @@ def __init__(
             validate_response_checksum,
             part_size,
             multipart_upload_threshold,
-            s3_request_core)
+            s3_request_core,
+            network_interface_names)
 
     @property
     def finished_future(self):
diff --git a/source/s3_meta_request.c b/source/s3_meta_request.c
index 7586537e5..c4c68b542 100644
--- a/source/s3_meta_request.c
+++ b/source/s3_meta_request.c
@@ -377,9 +377,11 @@ PyObject *aws_py_s3_client_make_meta_request(PyObject *self, PyObject *args) {
     uint64_t part_size;                                /* K */
     uint64_t multipart_upload_threshold;               /* K */
     PyObject *py_core;                                 /* O */
+    PyObject *network_interface_names_py;              /* O */
+
     if (!PyArg_ParseTuple(
             args,
-            "OOOizOOzzs#iipKKO",
+            "OOOizOOzzs#iipKKOO",
             &py_s3_request,
             &s3_client_py,
             &http_request_py,
@@ -396,7 +398,8 @@ PyObject *aws_py_s3_client_make_meta_request(PyObject *self, PyObject *args) {
             &validate_response_checksum,
             &part_size,
             &multipart_upload_threshold,
-            &py_core)) {
+            &py_core,
+            &network_interface_names_py)) {
         return NULL;
     }
     struct aws_s3_client *s3_client = aws_py_get_s3_client(s3_client_py);
@@ -438,6 +441,19 @@ PyObject *aws_py_s3_client_make_meta_request(PyObject *self, PyObject *args) {
         .validate_response_checksum = validate_response_checksum != 0,
     };
 
+    struct aws_byte_cursor *network_interface_names = NULL;
+    int num_network_interface_names = 0;
+
+    if (network_interface_names_py != Py_None) {
+        if (!PyList_Check(network_interface_names_py)) {
+            // waahm7: todo, correct way to raise errors?
+            PyErr_SetString(PyExc_TypeError, "Expected a list");
+            return NULL;
+        }
+        Py_ssize_t listSize = PyList_Size(listObj);
+        num_network_interface_names = (size_t)listSize;
+    }
+
     struct s3_meta_request_binding *meta_request = aws_mem_calloc(allocator, 1, sizeof(struct s3_meta_request_binding));
     if (!meta_request) {
         return PyErr_AwsLastError();
@@ -464,6 +480,15 @@ PyObject *aws_py_s3_client_make_meta_request(PyObject *self, PyObject *args) {
         }
     }
 
+    if (num_network_interface_names > 0) {
+        network_interface_names =
+            aws_mem_calloc(allocator, num_network_interface_names, sizeof(struct aws_byte_cursor));
+        for (Py_ssize_t i = 0; i < listSize; ++i) {
+            PyObject *strObj = PyList_GetItem(listObj, i);
+            network_interface_names[i] = aws_byte_cursor_from_pyunicode(strObj);
+        }
+    }
+
     struct aws_s3_meta_request_options s3_meta_request_opt = {
         .type = type,
         .operation_name = aws_byte_cursor_from_c_str(operation_name),
@@ -479,12 +504,15 @@ PyObject *aws_py_s3_client_make_meta_request(PyObject *self, PyObject *args) {
         .part_size = part_size,
         .multipart_upload_threshold = multipart_upload_threshold,
         .user_data = meta_request,
+        .network_interface_names = network_interface_names,
+        .num_network_interface_names = num_network_interface_names,
     };
 
     if (aws_high_res_clock_get_ticks(&meta_request->last_sampled_time)) {
         goto error;
     }
     meta_request->native = aws_s3_client_make_meta_request(s3_client, &s3_meta_request_opt);
+    aws_mem_cleanup(allocator, network_interface_names);
     if (meta_request->native == NULL) {
         PyErr_SetAwsLastError();
         goto error;