diff --git a/pyproject.toml b/pyproject.toml
index d58ffb3..099a91c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,7 +6,7 @@ build-backend = "poetry.core.masonry.api"
 profile = "black"
 
 [tool.mypy]
-python_version = 3.10
+python_version = "3.10"
 show_error_context = true
 pretty = true
 show_column_numbers = true
@@ -29,7 +29,7 @@ ignore_missing_imports = true
 
 [tool.poetry]
 name = "protocol-proxy"
-version = "2.0.0rc0"
+version = "2.0.0rc2"
 description = "A system for launching and communicating with a proxy application for network communication which runs in a separate process.."
 authors = ["The VOLTTRON Development Team <volttron@pnnl.gov>"]
 license = "Apache License 2.0"
diff --git a/src/protocol_proxy/ipc/asyncio.py b/src/protocol_proxy/ipc/asyncio.py
index 8945de7..8878cd4 100644
--- a/src/protocol_proxy/ipc/asyncio.py
+++ b/src/protocol_proxy/ipc/asyncio.py
@@ -91,7 +91,10 @@ async def _setup_inbound_server(self, socket_params: SocketParams = None):
                            f' on any port in range: {self.min_port} - {self.max_port}.')
                 break
             else:
-                self.inbound_params = SocketParams(*self.inbound_server.sockets[0].getsockname())
+                # Only take first 2 elements (host, port) from getsockname()
+                # IPv6 sockets return 4-tuple (host, port, flowinfo, scope_id)
+                sockname = self.inbound_server.sockets[0].getsockname()
+                self.inbound_params = SocketParams(sockname[0], sockname[1])
                 break
 
     async def start(self, *_, **__):
diff --git a/src/protocol_proxy/proxy/asyncio.py b/src/protocol_proxy/proxy/asyncio.py
index ea15b27..f1ca147 100644
--- a/src/protocol_proxy/proxy/asyncio.py
+++ b/src/protocol_proxy/proxy/asyncio.py
@@ -22,7 +22,10 @@ def __init__(self, manager_address: str, manager_port: int, manager_id: UUID, ma
                                                    token=manager_token)
 
     def get_local_socket_params(self) -> SocketParams:
-        return self.inbound_server.sockets[0].getsockname()
+        # Only take first 2 elements (host, port) from getsockname()
+        # IPv6 sockets return 4-tuple (host, port, flowinfo, scope_id)
+        sockname = self.inbound_server.sockets[0].getsockname()
+        return SocketParams(sockname[0], sockname[1])
 
     async def send_registration(self, remote: AsyncioProtocolProxyPeer):
         _log.debug(f"[send_registration] Attempting to register with manager at: {remote} (type={type(remote)})")