The plan is to cut off the Internet connection to simulate a situation of a cyber war. The disconnection is supposed to be “brief” and only remove connections to the outside of the country while keeping the internal communications alive and well.
The global Internet infrastructure won’t be used during the simulation. Instead, the users will go through the internal servers of the government.
Russian government likes to introduce unorthodox laws during the times when people are in a holiday mood. This time it was the New Year and Christmas that pulled the attention away from the proposed legislation that is unlikely to be popular.
Officially, the goal of the simulation is to test provisions in case the global powers decide to cause harm to Russia by cutting it off the grid. However, for a long time Russian bloggers have been warning users that they soon will have provisions like in China where severe restrictions are placed on what the users can see and access within the global network.
I believe the law may be unworkable as the legislators often have limited expertise and propose measures that cannot be implemented in reality, based on the level of the technology available. For instance, it is the government that is supposed to provide solutions and equipment to Internet Service Providers to filter out undesirable traffic to prohibited resources. How this will be done, is unclear.