diff --git a/pkg/kernel/common/config.go b/pkg/kernel/common/config.go
index 2a2b8cc..66cf917 100644
--- a/pkg/kernel/common/config.go
+++ b/pkg/kernel/common/config.go
@@ -2,7 +2,7 @@ package common
 
 type WakuConfig struct {
 	// Host is the LibP2P listening address; the consolidated WakuNodeConf calls
-	// it listenAddress (the legacy `host` key was removed).
+	// it listenAddress. This expects an IPv4.
 	Host                        string           `json:"listenAddress,omitempty"`
 	Nodekey                     string           `json:"nodekey,omitempty"`
 	Relay                       bool             `json:"relay"`
diff --git a/pkg/kernel/relay_send_receive_test.go b/pkg/kernel/relay_send_receive_test.go
index ef1ebd7..f951af9 100644
--- a/pkg/kernel/relay_send_receive_test.go
+++ b/pkg/kernel/relay_send_receive_test.go
@@ -74,7 +74,7 @@ func TestRelaySendReceive(t *testing.T) {
 	publish()
 	ticker := time.NewTicker(1 * time.Second)
 	defer ticker.Stop()
-	deadline := time.After(30 * time.Second)
+	deadline := time.After(10 * time.Second)
 	for {
 		select {
 		case env := <-receiver.MsgChan: