Generally that’s regarded as civic nationalism (“People are bound together by a common government”), whereas most people think of ethnic nationalism (“People are bound together by common descent or culture”) when they speak of nationalism. Though there is a strong argument to be made for the SovUnion being an extension of Russian domination over other ethnicities, just like the Russian Empire which preceded it.
Generally that’s regarded as civic nationalism (“People are bound together by a common government”), whereas most people think of ethnic nationalism (“People are bound together by common descent or culture”) when they speak of nationalism. Though there is a strong argument to be made for the SovUnion being an extension of Russian domination over other ethnicities, just like the Russian Empire which preceded it.