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Express Logic’s NetX Duo™ IPv6 TCP/IP Stack Passes IPv6 Ready Logo Testing

Express Logic’s NetX Duo, a dual IPv4/IPv6 stack, passes IPv6-Ready Logo testing. The IPv6 Forum requires rigorous conformance and interoperability testing to ensure confidence that IPv6 is available and ready to be used.

San Diego, CA, April 28, 2010 --( NetX Duo joins exclusive group of approved embedded solutions for IPv6

Express Logic, Inc., the worldwide leader in royalty-free real-time operating systems (RTOS), today announced that its NetX Duo™ dual IPv4/IPv6 TCP/IP stack has successfully passed rigorous IPv6-Ready Logo testing. The IPv6 Forum, a world-wide consortium focused on providing technical guidance for the deployment of IPv6, does not allow companies to post the IPv6 Ready Logo until conformance and interoperability testing is complete in order to increase user confidence by demonstrating that IPv6 is available now and ready to be used.

IPv6 and NetX Duo
IPv6, the latest standard set by the Internet Engineering Task Force (IETF), expands and supplements the capabilities of IPv4. IPv6 uses a 128-bit address field, which provides for 3.4*(10^38) unique addresses, more than enough for every person to own thousands of addresses and for every device to connect directly to the Internet.

Because NetX Duo is a dual IPv4 and IPv6 TCP/IP stack, it can handle both IPv4 and IPv6 protocols and is highly optimized for performance-critical embedded devices. Its modular architecture lets designers customizes various components based on system requirements. NetX Duo APIs are fully backward compatible with the IPv4 services. NetX Duo answers the need for expanded IP capabilities while also supporting legacy needs at the same time.

Phase-II IPv6 Ready Logo Testing
To obtain IPv6-Ready Logo certification, a network stack must pass conformance and interoperability tests, administered and validated by the IPv6 Forum. There are two phases of testing, Phase-I and Phase-II. Phase-I is relatively basic and limited to verification of select IPv6 capabilities. Phase-II is much more rigorous and extensive, and is a superset of Phase-I.

Express Logic chose to seek Phase-II approval, which required NetX Duo to pass an extremely challenging set of 373 test cases, which cover the following RFCs:

RFC 2460 - IPv6 Specification
RFC 4861 - Neighbor Discovery for IPv6
RFC 4862 - IPv6 Stateless Address Autoconfiguration
RFC 1981 - Path MTU Discovery for IPv6
RFC 4443 - ICMPv6

These test cases make sure the implementation conforms to core IPv6 operations.

The Phase-II Interoperability tests ensure that the implementation is able to work with other devices and routers. This test requires setting up a test network with multiple routers and hosts, and to validate that NetX Duo follows the IPv6 standard and correctly interacts with other hosts and routers.

NetX Duo has successfully performed these tests and has received official IPv6-Ready Logo certification, enabling Express Logic to join a select, small group of embedded software companies who can proudly display the IPv6 Ready logo, indicating that they have completed this rigorous testing and validation process.

“The IPv6 Ready Logo signifies that our NetX Duo stack has proven itself fully compliant with IPv6 specifications and requirements, simplifying developers’ jobs by enabling them to transition from IPv4 to IPv6 seamlessly,” commented William E. Lamie, president of Express Logic. “Many government agencies require that all Internet-capable devices have IPv6 support. Our IPv6 Ready Logo validation and certification will go a long way toward ensuring that embedded devices are readily accepted and easily implemented throughout the world.”

Shipping and Availability
NetX Duo is available immediately from Express Logic, with license prices starting at $18,750, with no run-time royalties.

About Express Logic
Headquartered in San Diego, CA, Express Logic offers the most advanced run-time solutions for deeply embedded applications. Surrounding Express Logic’s popular ThreadX RTOS is a suite of middleware including the high-performance NetX™ TCP/IP stack, the FAT-compatible FileX™ file system, the easy-to-use PEGX™ graphics toolkit, and the comprehensive USBX™ Host/Device USB protocol stack. Express Logic also features innovative development tools including the Eclipse-based BenchX® IDE, the graphical TraceX® real-time event analyzer, and the new, unique StackX™ stack size analyzer. All run-time products from Express Logic include full source-code and have no royalties. For more information about Express Logic solutions, please visit, call 1-888-THREADX, or email inquiries to


ThreadX, BenchX, TraceX, and FileX are registered trademarks, and Certification Pack, NetX, CANX, USBX, StackX, preemption-threshold, picokernel, and UDP fast path, are trademarks of Express Logic, Inc. All other brands or product names are the property of their respective holders.
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Express Logic
John Carbone

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