diff --git a/src/include/ipxe/rndis.h b/src/include/ipxe/rndis.h
index bd6793e4..b7c9c064 100644
--- a/src/include/ipxe/rndis.h
+++ b/src/include/ipxe/rndis.h
@@ -191,6 +191,8 @@ enum rndis_status {
 	RNDIS_STATUS_MEDIA_CONNECT = 0x4001000bUL,
 	/** Device is disconnected from the medium */
 	RNDIS_STATUS_MEDIA_DISCONNECT = 0x4001000cUL,
+	/** Unknown start-of-day status code */
+	RNDIS_STATUS_WTF_WORLD = 0x40020006UL,
 };
 
 /** RNDIS keepalive message */
diff --git a/src/net/rndis.c b/src/net/rndis.c
index dde4fcdd..cd710a49 100644
--- a/src/net/rndis.c
+++ b/src/net/rndis.c
@@ -686,6 +686,10 @@ static void rndis_rx_status ( struct rndis_device *rndis,
 		netdev_link_down ( netdev );
 		break;
 
+	case RNDIS_STATUS_WTF_WORLD:
+		/* Ignore */
+		break;
+
 	default:
 		DBGC ( rndis, "RNDIS %s unexpected status %#08x:\n",
 		       rndis->name, status );