diff --git a/agent/xds/listeners.go b/agent/xds/listeners.go
index 83adedb6bdb0..978960da4834 100644
--- a/agent/xds/listeners.go
+++ b/agent/xds/listeners.go
@@ -76,7 +76,7 @@ func (s *Server) listenersFromSnapshotConnectProxy(cInfo connectionInfo, cfgSnap
 			port = cfgSnap.Proxy.TransparentProxy.OutboundListenerPort
 		}
 
-		// TODO markan Investigate UDS for TransparentProxy, probably should not be part of first pass.
+		// TODO markan This shouldn't ever use a unix domain socket.
 		outboundListener = makePortListener(OutboundListenerName, "127.0.0.1", port, envoy_core_v3.TrafficDirection_OUTBOUND)
 		outboundListener.FilterChains = make([]*envoy_listener_v3.FilterChain, 0)
 		outboundListener.ListenerFilters = []*envoy_listener_v3.ListenerFilter{
@@ -293,6 +293,7 @@ func (s *Server) listenersFromSnapshotConnectProxy(cInfo connectionInfo, cfgSnap
 	// Configure additional listener for exposed check paths
 	for _, path := range paths {
 		clusterName := LocalAppClusterName
+		// TODO markan look through this code in more detail
 		if path.LocalPathPort != cfgSnap.Proxy.LocalServicePort {
 			clusterName = makeExposeClusterName(path.LocalPathPort)
 		}
diff --git a/api/agent.go b/api/agent.go
index fef36117ee57..32bc31ab836a 100644
--- a/api/agent.go
+++ b/api/agent.go
@@ -81,7 +81,7 @@ type AgentService struct {
 	Tags              []string
 	Meta              map[string]string
 	Port              int
-	Address           string
+	Address           string                    // TODO markan SocketPath?
 	TaggedAddresses   map[string]ServiceAddress `json:",omitempty"`
 	Weights           AgentWeights
 	EnableTagOverride bool
@@ -117,7 +117,7 @@ type AgentServiceConnectProxyConfig struct {
 	DestinationServiceName string                 `json:",omitempty"`
 	DestinationServiceID   string                 `json:",omitempty"`
 	LocalServiceAddress    string                 `json:",omitempty"`
-	LocalServicePort       int                    `json:",omitempty"`
+	LocalServicePort       int                    `json:",omitempty"` // TODO markan LocalSocketPath?
 	Mode                   ProxyMode              `json:",omitempty"`
 	TransparentProxy       TransparentProxyConfig `json:",omitempty"`
 	Config                 map[string]interface{} `json:",omitempty" bexpr:"-"`