| 摘要 |
Method of providing client device with automatic update of an IP address associated with domain name, comprising: If domain name is member of second set being subset of first set, obtaining by server from first domain name resolution service a first IP address. If domain name is member of third set being subset of second set, sending to client device first IP address. If domain name is member of second set, and if second IP address associated with domain name being different from first IP address is obtainable by server from second domain name resolution service, obtaining by server from second domain name resolution service second IP address. If domain name is member of third set, sending to client device second IP address without server having received from client device request for an IP address associated with domain name after server has sent to client device first IP address. |
