3.1.7.3.8 Notification of New Server or Address
Each FileSearchRequest element checks its F_WAITING_FOR_DISCOVERY element flag and ignores the notification if this flag is false.
If this flag is not false, the FileSearchRequest element will initiate a new FileDiscoveryAttempt element to the server (using the newly discovered address, if applicable) and insert it into the FileSearchRequest element's PENDING-CALLS-TABLE element. The search decrements SERVERS_NEEDED element; if it is now zero, the F_WAITING_FOR_DISCOVERY element flag is cleared.