One root server cluster supports a copy of the Legacy root for test and reference purposes. That root server cluster may be used by ccTLD and ISPs as a secondary root server system.

In case of network emergency (failure of the legacy system, terrorist attack, DoS on the legacy root system), all the other root server clusters may be loaded with the Legacy root and provide support to the local Internet.

Necessary IP addressing information will be provided to the Governments and ccTLDs and coordinated with them. Such agreements might serve to investigate public interest rules to be agreed/voted.