Remarks on "Toward Compact Interdomain Routing"
  This paper critically examines some propositions and arguments of cs.NI/0508021 regarding applicability of hierarchical routing and perspectives of compact routing. Arguments against the former are found to be inaccurate while the latter is found to be equivalent to well-known deployed solutions. Also, multiple (stacked) application of compact-routing solutions is found to be equivalent to hierarchical routing. 
Victor S. Grishchenko