fix issue with attr error for host_forward
@@ -128,7 +128,7 @@ class QemuCommand(object):
self.secondary_network = args.secondary_network
# Append additional port forwarding to QEMU command line.
- if args.host_forward:
+ if hasattr(args, 'host_forward'):
self.host_fwd = args.host_forward
def command_line(self):
