diff --git a/kvm-run.c b/kvm-run.c
index 0ac2ed8..a16a482 100644
--- a/kvm-run.c
+++ b/kvm-run.c
@@ -44,7 +44,7 @@
 #define DEFAULT_CONSOLE		"serial"
 #define DEFAULT_NETWORK		"virtio"
 #define DEFAULT_HOST_ADDR	"192.168.33.2"
-#define DEFAULT_GUEST_MAC	"00:11:22:33:44:55"
+#define DEFAULT_GUEST_MAC	"00:15:15:15:15:15"
 #define DEFAULT_SCRIPT		"none"
 
 #define MB_SHIFT		(20)
diff --git a/virtio/net.c b/virtio/net.c
index 7eebee0..38f0c9b 100644
--- a/virtio/net.c
+++ b/virtio/net.c
@@ -73,7 +73,7 @@ static struct net_dev ndev = {
 	.mutex	= PTHREAD_MUTEX_INITIALIZER,
 
 	.config = {
-		.mac			= { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55 },
+		.mac			= {0x00, 0x15, 0x15, 0x15, 0x15, 0x15},
 		.status			= VIRTIO_NET_S_LINK_UP,
 	},
 	.host_features			= 1UL << VIRTIO_NET_F_MAC