diff --git a/libp2p/network/swarm.py b/libp2p/network/swarm.py
index 0c405106..ee4c6bd9 100644
--- a/libp2p/network/swarm.py
+++ b/libp2p/network/swarm.py
@@ -114,7 +114,7 @@ class Swarm(INetwork):
             error_msg = "fail to upgrade security for peer %s"
             logger.debug(error_msg, peer_id)
             await raw_conn.close()
-            raise SwarmException(error_msg % peer_id) from error
+            raise SwarmException(error_msg % peer_id) from error  # wip
 
         logger.debug("upgraded security for peer %s", peer_id)
 
@@ -124,7 +124,7 @@ class Swarm(INetwork):
             error_msg = "fail to upgrade mux for peer %s"
             logger.debug(error_msg, peer_id)
             await secured_conn.close()
-            raise SwarmException(error_msg % peer_id) from error
+            raise SwarmException(error_msg % peer_id) from error  # wip
 
         logger.debug("upgraded mux for peer %s", peer_id)
 
@@ -190,7 +190,7 @@ class Swarm(INetwork):
                     error_msg = "fail to upgrade security for peer at %s"
                     logger.debug(error_msg, peer_addr)
                     await raw_conn.close()
-                    raise SwarmException(error_msg % peer_addr) from error
+                    raise SwarmException(error_msg % peer_addr) from error  # wip
                 peer_id = secured_conn.get_remote_peer()
 
                 logger.debug("upgraded security for peer at %s", peer_addr)
@@ -204,7 +204,7 @@ class Swarm(INetwork):
                     error_msg = "fail to upgrade mux for peer %s"
                     logger.debug(error_msg, peer_id)
                     await secured_conn.close()
-                    raise SwarmException(error_msg % peer_id) from error
+                    raise SwarmException(error_msg % peer_id) from error  # wip
                 logger.debug("upgraded mux for peer %s", peer_id)
 
                 await self.add_conn(muxed_conn)
diff --git a/libp2p/transport/tcp/tcp.py b/libp2p/transport/tcp/tcp.py
index f5c2aa40..96f93daf 100644
--- a/libp2p/transport/tcp/tcp.py
+++ b/libp2p/transport/tcp/tcp.py
@@ -92,4 +92,4 @@ class TCP(ITransport):
 
 
 def _multiaddr_from_socket(socket: socket) -> Multiaddr:
-    return Multiaddr("/ip4/%s/tcp/%s" % socket.getsockname())
+    return Multiaddr("/ip4/%s/tcp/%s" % socket.getsockname())  # wip