In versions R80.40 and higher, the reserved words in sk40179 also apply to the hostname of the machine.
In versions lower than R80.40, the reserved words were allowed in the hostname.
If one of the reserved words is included in the hostname of a machine, change the hostname before you upgrade to version R80.40 or higher.
This solution has been verified for the specific scenario, described by the combination of Product, Version and Symptoms. It may not work in other scenarios.