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# File radius/packet.rb, line 335
    def set_vsattr(vendorid, name, value)
      if @vsattributes[vendorid] == nil
	@vsattributes[vendorid] = Hash.new(nil)
      end
      if @vsattributes[vendorid][name] == nil
	@vsattributes[vendorid][name] = Array.new
      end
      @vsattributes[vendorid][name].push(value)
    end