set management interface <new_management_interface>
delete interface <old_management_interface> ipv4-address
set interface <new_management_interface> ipv4-address <ip>
mask-length <length>
set interface <new_management_interface> state on
set management interface <new_management_interface>
delete interface <old_management_interface> ipv4-address
set interface <new_management_interface> ipv4-address <ip>
mask-length <length>
set interface <new_management_interface> state on