The colleagues!
Today after 18.30 will be necessary to stop the DEV server at 192.168.5.17 and the customer's employees will turn off the server from power for 10-15 minutes.
After that, it will be physically moved to another place and we will need to restart everything.
P.S The fact is that it is now included in the network filter, which the cleaner periodically uses for its vacuum cleaner.
This carries serious project risks. Yes, I was crying too. : )