# File lib/fog/sakuracloud/models/volume/disk.rb, line 50
        def associate_ip(ipaddress, networkmasklen, defaultroute)
          subnet ={
            :ipaddress => ipaddress,
            :networkmasklen => networkmasklen,
            :defaultroute => defaultroute
          }
          requires :id
          service.associate_ip_to_disk(id, subnet )
          true
        end