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As the Internet becomes the social infrastructure, a network design method that has the adaptability against the failure of network equipment and has the sustainability against changes of traffic demand is becoming important. Since we do not know in advance when the environmental changes occur and how large the changes are, it is preferable to have heterogeneity in topological structures so that the network can evolve more easily. In this paper, we investigate the heterogeneity of topologicalfatcat:4fl6en2vsffyjplzaz3zru45jm