# File common/lib/symbiosis/host.rb, line 72
    def self.ipv6_ranges
      ipv6_ranges = []

      #
      # Find the primary interface.
      #
      interface = self.primary_interface
      return ipv6_ranges if interface.nil?

      netlink_socket.addr.list(:index => interface.index, :family=>Socket::AF_INET6) do |ifaddr|
        next unless 0 == ifaddr.scope
        ipv6_ranges << IPAddr.new(ifaddr.address.to_s+"/"+ifaddr.prefixlen.to_s)
      end

      ipv6_ranges
    end