diff --git a/experiments/extensions/Makefile b/experiments/extensions/Makefile
new file mode 100644
index 0000000..67a06c9
--- /dev/null
+++ b/experiments/extensions/Makefile
@@ -0,0 +1,22 @@
+default: test
+
+build:
+	protoc -I . --python_out=. ext1.proto
+	protoc -I . --python_out=. ext2.proto
+
+test: build
+	./write_generic.py | ./read_generic.py
+	./write_generic.py | ./read_ext1.py
+	./write_generic.py | ./read_ext2.py
+	./write_generic.py | ./read_both.py
+
+	./write_ext1.py | ./read_generic.py
+	./write_ext1.py | ./read_ext1.py
+	./write_ext1.py | ./read_ext2.py
+	./write_ext1.py | ./read_both.py
+
+	./write_ext2.py | ./read_generic.py
+	./write_ext2.py | ./read_ext1.py
+	./write_ext2.py | ./read_ext2.py
+	./write_ext2.py | ./read_both.py
+
diff --git a/experiments/extensions/README.md b/experiments/extensions/README.md
new file mode 100644
index 0000000..058aae3
--- /dev/null
+++ b/experiments/extensions/README.md
@@ -0,0 +1,6 @@
+This is an experiment to work with Any type fields in protobuf and
+in Python. Run 'make' to see how a set of writers emit data with
+no or one of two extensions, while four readers try to decode the
+data. Depending on which of them pre-loads the extension protobufs,
+they can decode the extension data or leave it in the packed value
+format.
diff --git a/experiments/extensions/__init__.py b/experiments/extensions/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/experiments/extensions/__init__.py
diff --git a/experiments/extensions/ext1.proto b/experiments/extensions/ext1.proto
new file mode 100644
index 0000000..d8fd448
--- /dev/null
+++ b/experiments/extensions/ext1.proto
@@ -0,0 +1,17 @@
+syntax = "proto3";
+
+package vendor.x1;
+
+// Vendor specific adapter descriptor data
+message AdapterDescription {
+    string internal_name = 1;
+    string internal_code = 2;
+    uint32 price = 3;
+}
+
+// Vendor specific adapter configuration data
+message AdapterConfig {
+    uint32 volume = 1;
+    uint32 bass = 2;
+    uint32 treble = 3;
+}
diff --git a/experiments/extensions/ext2.proto b/experiments/extensions/ext2.proto
new file mode 100644
index 0000000..ac9f1ec
--- /dev/null
+++ b/experiments/extensions/ext2.proto
@@ -0,0 +1,24 @@
+syntax = "proto3";
+
+package vendor.x2;
+
+// Vendor specific adapter descriptor data
+message AdapterDescription {
+    string foo = 1;
+    uint32 arg1 = 2;
+    uint32 arg2 = 3;
+    uint32 arg3 = 4;
+    uint32 arg4 = 5;
+    uint32 arg5 = 6;
+    uint32 arg6 = 7;
+}
+
+// Vendor specific adapter configuration data
+message AdapterConfig {
+    uint64 conf1 = 1;
+    uint64 conf2 = 2;
+    uint64 conf3 = 3;
+    uint64 conf4 = 4;
+    uint64 conf5 = 5;
+    repeated string things = 6;
+}
diff --git a/experiments/extensions/read_both.py b/experiments/extensions/read_both.py
new file mode 100755
index 0000000..682e51a
--- /dev/null
+++ b/experiments/extensions/read_both.py
@@ -0,0 +1,18 @@
+#!/usr/bin/env python
+
+"""
+Read adapter data while decoding both known custom fields
+"""
+
+import sys
+from json import dumps
+
+from common.utils.json_format import MessageToDict
+from voltha.protos import adapter_pb2
+
+adapter = adapter_pb2.Adapter()
+binary = sys.stdin.read()
+adapter.ParseFromString(binary)
+
+print dumps(MessageToDict(adapter, strict_any_handling=False))
+
diff --git a/experiments/extensions/read_ext1.py b/experiments/extensions/read_ext1.py
new file mode 100755
index 0000000..8032615
--- /dev/null
+++ b/experiments/extensions/read_ext1.py
@@ -0,0 +1,16 @@
+#!/usr/bin/env python
+"""
+Read adapter data while decoding ext1 custom fields.
+"""
+import sys
+from json import dumps
+
+from common.utils.json_format import MessageToDict
+from voltha.protos import adapter_pb2
+
+adapter = adapter_pb2.Adapter()
+binary = sys.stdin.read()
+adapter.ParseFromString(binary)
+
+print dumps(MessageToDict(adapter, strict_any_handling=False))
+
diff --git a/experiments/extensions/read_ext2.py b/experiments/extensions/read_ext2.py
new file mode 100755
index 0000000..a187137
--- /dev/null
+++ b/experiments/extensions/read_ext2.py
@@ -0,0 +1,16 @@
+#!/usr/bin/env python
+"""
+Read adapter data while decoding ext2 custom fields
+"""
+import sys
+from json import dumps
+
+from common.utils.json_format import MessageToDict
+from voltha.protos import adapter_pb2
+
+adapter = adapter_pb2.Adapter()
+binary = sys.stdin.read()
+adapter.ParseFromString(binary)
+
+print dumps(MessageToDict(adapter, strict_any_handling=False))
+
diff --git a/experiments/extensions/read_generic.py b/experiments/extensions/read_generic.py
new file mode 100755
index 0000000..e910188
--- /dev/null
+++ b/experiments/extensions/read_generic.py
@@ -0,0 +1,15 @@
+#!/usr/bin/env python
+"""
+Read adapter data while ignoring custom fields
+"""
+import sys
+from json import dumps
+
+from common.utils.json_format import MessageToDict
+from voltha.protos import adapter_pb2
+
+adapter = adapter_pb2.Adapter()
+binary = sys.stdin.read()
+adapter.ParseFromString(binary)
+print dumps(MessageToDict(adapter, strict_any_handling=False))
+
diff --git a/experiments/extensions/write_ext1.py b/experiments/extensions/write_ext1.py
new file mode 100755
index 0000000..57131ef
--- /dev/null
+++ b/experiments/extensions/write_ext1.py
@@ -0,0 +1,40 @@
+#!/usr/bin/env python
+"""
+Write adapter data without any custom fields
+"""
+import sys
+
+import ext1_pb2
+from voltha.protos import adapter_pb2
+from google.protobuf import any_pb2
+
+def custom_config():
+    any = any_pb2.Any()
+    any.Pack(ext1_pb2.AdapterConfig(
+        volume=20,
+        bass=50,
+        treble=50
+    ))
+    return any
+
+
+def custom_description():
+    any = any_pb2.Any()
+    any.Pack(ext1_pb2.AdapterDescription(
+        internal_name='hulu',
+        internal_code='foo',
+        price=42
+    ))
+    return any
+
+
+adapter = adapter_pb2.Adapter(
+    id='42',
+    config=adapter_pb2.AdapterConfig(
+        additional_config=custom_config()
+    ),
+    additional_description=custom_description()
+)
+
+sys.stdout.write(adapter.SerializeToString())
+
diff --git a/experiments/extensions/write_ext2.py b/experiments/extensions/write_ext2.py
new file mode 100755
index 0000000..b9316a1
--- /dev/null
+++ b/experiments/extensions/write_ext2.py
@@ -0,0 +1,47 @@
+#!/usr/bin/env python
+"""
+Write adapter data without any custom fields
+"""
+import sys
+
+import ext2_pb2
+from voltha.protos import adapter_pb2
+from google.protobuf import any_pb2
+
+
+def custom_config():
+    any = any_pb2.Any()
+    any.Pack(ext2_pb2.AdapterConfig(
+        conf1=1,
+        conf2=42,
+        conf3=0,
+        conf4=11111111111,
+        conf5=11231231,
+        things = ['foo', 'bar', 'baz', 'zoo']
+    ))
+    return any
+
+
+def custom_description():
+    any = any_pb2.Any()
+    any.Pack(ext2_pb2.AdapterDescription(
+        foo='hulu',
+        arg1=42,
+        arg2=42,
+        arg3=42,
+        arg4=42,
+        arg5=42
+    ))
+    return any
+
+
+adapter = adapter_pb2.Adapter(
+    id='42',
+    config=adapter_pb2.AdapterConfig(
+        additional_config=custom_config()
+    ),
+    additional_description=custom_description()
+)
+
+sys.stdout.write(adapter.SerializeToString())
+
diff --git a/experiments/extensions/write_generic.py b/experiments/extensions/write_generic.py
new file mode 100755
index 0000000..1cfca6c
--- /dev/null
+++ b/experiments/extensions/write_generic.py
@@ -0,0 +1,15 @@
+#!/usr/bin/env python
+"""
+Write adapter data without any custom fields
+"""
+import sys
+
+from voltha.protos import adapter_pb2
+
+adapter = adapter_pb2.Adapter(
+    id='42',
+    config=adapter_pb2.AdapterConfig()
+)
+
+sys.stdout.write(adapter.SerializeToString())
+