Sprint Communications Comapny L.p.

Robert J Pierce

John H Bennett, Iii

Dale E Winn

Jeremy Richard Breau

Frederick Carl Rogers

Brent A Scott

Austin C Castaldi

Methods and computer-readable media are provided to allow for the establishment of an Internet protocol (IP) data session with a dual-stack mobile communications device by authenticating the device. An IP data session is requested, and a home agent sends an indication of this request. A DNS server that will be assigned to a device is identified by querying a database and is identified based on the device's capabilities. The device capabilities are determined by a device-capability identifier that is associated with the user of the device or the device itself, such as a network access identifier. The capabilities may include the device type, applications, programs, or services that the user of the device is subscribed to, or capabilities that are inherent to the phone. Once the DNS server is identified, a server identifier is sent to the home agent, which assigns the DNS server to the device.

Assignment of domain name system (DNS) servers

Communication to a target device using IP is provided. An IPv6 address is registered. An AAAA-record DNS lookup is performed and an A-record DNS lookup is performed, both using the IPv6 network. A response related to the AAAA-record DNS lookup is received and a response to the A-record DNS lookup is received. If a valid IPv6 address is contained in the AAAA-record response, communication uses IPv6. If no valid IPv6 address is contained in the AAAA-record response, an IPv4 address is registered and communication uses IPv4.

Using domain name server response and internet protocol version 6 to conserve internet protocol version 4 addresses

What is disclosed is a method of operating a communication system. The method includes receiving a registration request for a user device and processing the registration request to associate a network address with domain name information for the user device. The method also includes transferring an update message for delivery to a local domain name database with the association between the network address and the domain name information for the user device, and withholding an update of the association in a master domain name database. The method also includes receiving a first query for the association between the network address and the domain name information for the user device into the master domain name database, and in response, transferring a second query for delivery to the local domain name database. The method also includes receiving the second query in the local domain name database, and in response, transferring the association between the network address and the domain name information for the user device for delivery to the master domain name database.

Enhanced domain name query for user device domain name information

Methods and computer-readable media are provided to allow for the assignment of domain-name system (DNS) servers, static IP addresses, and dynamic home agents to a device requesting the establishment of an IPv6 data session. DNS servers may be determined for a particular device based on one or more device capabilities, such as the type of device or certain products or services to which the device is subscribed. The device capabilities are determined by querying a customer-profile database that defines certain information about users and devices, such as static IP addresses and device capabilities. The DNS servers are used by a device to translate a host name into a host address, in addition to establishing an IPv6 data session. Once determined, a component, such as an Authentication, Authorization, and Accounting (AAA) server may send the attributes to a packet-routing component, which assigns the DNS servers to the device.

Attribute assignment for IP dual stack devices

A method, medium, and communication system are provided for preventing fragmentation when tunneling between a first and second communication network. The communication system includes nodes and routers that transmit packets over the first and second communication networks. The nodes generate requests to identify the maximum transmission sizes of the first and second communication networks. In turn, the nodes format packets based on the minimum of the maximum transmission sizes of the first and second communication networks. The routers transmit the packets formatted by the nodes over the first and second communication networks without fragmenting the packets.

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Castle Rock, CO, United States of America

Robert J Pierce