diff --git a/config/init.go b/config/init.go
index 8f456f690..05e6eb107 100644
--- a/config/init.go
+++ b/config/init.go
@@ -39,6 +39,7 @@ func Init(out io.Writer, nBitsForKeypair int) (*Config, error) {
 			Swarm: []string{
 				"/ip4/0.0.0.0/tcp/4001",
 				// "/ip4/0.0.0.0/udp/4002/utp", // disabled for now.
+				"/ip6/::/tcp/4001",
 			},
 			API:     "/ip4/127.0.0.1/tcp/5001",
 			Gateway: "/ip4/127.0.0.1/tcp/8080",