After NE40-8 upgrades, check version information through display version and the version is upgraded. However, there is no related configuration command of IPv6 under system view and related configuration of IPv6 protocol cannot be finished.
Delete license.txt of SRU and LPU. Re-download license.txt to flash of NE40-8 RSU and LPU. Check boot-load and its path correctly points to destination version file of RSU and LPU. Restart the device and the problem is solved.
Check the storage of version file and license.txt. There is no license file in flash. The device cannot load license file when it starts.
For the upgrade of NE40 serial product, if the version file exceeds flash size, load the file in disk of SRU. license.txt must be saved in flash.