turn off nat_net when use_vtn is True
turn off nat_net when use_vtn is True

open-cloud/xos,opencord/xos,cboling/xos,zdw/xos,opencord/xos,open-cloud/xos,cboling/xos,open-cloud/xos,cboling/xos,opencord/xos,zdw/xos,cboling/xos,zdw/xos,zdw/xos,cboling/xos