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diff --git a/qemu/roms/ipxe/src/hci/commands/lotest_cmd.c b/qemu/roms/ipxe/src/hci/commands/lotest_cmd.c
new file mode 100644
index 000000000..0fa031bcb
--- /dev/null
+++ b/qemu/roms/ipxe/src/hci/commands/lotest_cmd.c
@@ -0,0 +1,97 @@
+/*
+ * Copyright (C) 2010 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <getopt.h>
+#include <ipxe/netdevice.h>
+#include <ipxe/command.h>
+#include <ipxe/parseopt.h>
+#include <ipxe/if_ether.h>
+#include <usr/lotest.h>
+
+/** @file
+ *
+ * Loopback testing commands
+ *
+ */
+
+/** "lotest" options */
+struct lotest_options {
+	/** MTU */
+	unsigned int mtu;
+};
+
+/** "lotest" option list */
+static struct option_descriptor lotest_opts[] = {
+	OPTION_DESC ( "mtu", 'm', required_argument,
+		      struct lotest_options, mtu, parse_integer ),
+};
+
+/** "lotest" command descriptor */
+static struct command_descriptor lotest_cmd =
+	COMMAND_DESC ( struct lotest_options, lotest_opts, 2, 2,
+		       "<sending interface> <receiving interface>" );
+
+/**
+ * "lotest" command
+ *
+ * @v argc		Argument count
+ * @v argv		Argument list
+ * @ret rc		Return status code
+ */
+static int lotest_exec ( int argc, char **argv ) {
+	struct lotest_options opts;
+	struct net_device *sender;
+	struct net_device *receiver;
+	int rc;
+
+	/* Parse options */
+	if ( ( rc = parse_options ( argc, argv, &lotest_cmd, &opts ) ) != 0 )
+		return rc;
+
+	/* Parse sending interface name */
+	if ( ( rc = parse_netdev ( argv[optind], &sender ) ) != 0 )
+		return rc;
+
+	/* Parse receiving interface name */
+	if ( ( rc = parse_netdev ( argv[ optind + 1 ], &receiver ) ) != 0 )
+		return rc;
+
+	/* Use default MTU if none specified */
+	if ( ! opts.mtu )
+		opts.mtu = ETH_MAX_MTU;
+
+	/* Perform loopback test */
+	if ( ( rc = loopback_test ( sender, receiver, opts.mtu ) ) != 0 ) {
+		printf ( "Test failed: %s\n", strerror ( rc ) );
+		return rc;
+	}
+
+	return 0;
+}
+
+/** Loopback testing commands */
+struct command lotest_command __command = {
+	.name = "lotest",
+	.exec = lotest_exec,
+};