Patent ID: 7864780
Filing Date: 2011-01-04
Classification: H04L

Abstract:
1. A method, comprising: receiving by a device adapted for performing Network Address Translation and Protocol Translation a single DNS query from a node, the single DNS query requesting an IP address for a name; automatically sending by the device two DNS queries to a DNS server in response to the single DNS query received from the node, the two DNS queries including a first DNS query that includes the name and a second DNS query that includes the name, the two DNS queries conforming to two different IP protocols, wherein the node is in a domain conforming to a first one of the two different IP protocols and the DNS server is in a domain conforming to a second one of the two different IP protocols; receiving by the device a first DNS reply from the DNS server; receiving by the device a second DNS reply from the DNS server, the second DNS reply being received subsequent to the first DNS reply; and when the first DNS reply includes at least one answer resource record, automatically forwarding the first DNS reply to the node and dropping the second DNS reply, wherein forwarding the first DNS reply is performed without waiting for the second DNS reply to be received; wherein sending the second DNS query is performed automatically without waiting for a DNS reply corresponding to the first DNS query to be received.