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Frequently Asked Questions

How does my existing Windows Sockets for IPv4 code need to be modified to support IPv6?

IPv6 for Microsoft Windows: Frequently Asked Questions
The Windows Platform SDK includes a tool called Checkv4.exe. Checkv4.exe scans source code files to identify code that needs to be changed to support IPv6. Checkv4 displays the line number and a message recommending how the code should be changed. Here is an example of Checkv4.exe output: test.c(35) : gethostbyname : use getaddrinfo instead test.c(40) : gethostbyaddr : use getnameinfo instead test.
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How does MemoryBlock code need to be modified to support Universal Binaries?

REALbasic 2007 FAQ | REALbasic 2007
MemoryBlocks default to BigEndian on PowerPC and LittleEndian on Intel. Depending on your use of the MemoryBlock, you may need to explicitly set LittleEndian property on your MemoryBlocks object. In many cases no changes will be required.
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How does BinaryStream code need to be modified to support Universal Binaries?

REALbasic 2007 FAQ | REALbasic 2007
BinaryStreams default to BigEndian on PowerPC and LittleEndian on Intel. In many cases no changes will be required, but if you want consistent behavior when running your application on both PowerPC and Intel-based Macs, you should explicitly set LittleEndian property on your BinaryStream object. In most cases, no, you do not. REALbasic classes should just work, unless they make use of MemoryBlocks and BinaryStreams. (See above.) If you are not sure, check with the developer of that class.
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Which RFCs do the protocol modules for OSPF, BGP, and RIP (IPv4 and IPv6) support?

IP Infusion: Product FAQs
Detailed spec sheets are available for each of the protocol modules, as well as the ZebOS Network Services Module. See our products page on the Web site to download the PDF versions. Yes. It is the first commercially available package that fully supports OSPFv3, BGP-4+, and RIPng. Because of the modularity of the ARS, customers can deploy subsets of the protocol modules.
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What versions of Windows provide support for IPv6?

IPv6 for Microsoft Windows: Frequently Asked Questions
Windows Vista and Windows Server 2008 support an integrated IPv4 and IPv6 implementation known as the Next Generation TCP/IP stack. For more information, see Next Generation TCP/IP Stack in Windows Vista and Windows Server 2008. Microsoft provides supported IPv6 implementations for Windows Server 2003, Windows XP with Service Pack 1 (SP1) or later, and Windows CE .NET 4.1 or later.
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Do Windows 95/98/NT support IPv6?

Innofone : FAQ
Microsoft itself does not support IPv6 for Windows 95/98 or NT4. There is however an IPv6 implementation from Trumpet by the name of Winsock which can be installed on these Windows versions (and even on Windows 3.1). The software is not free. There is also a try-out version available for a 30 day trial period, downloadable on their website.
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Do we need to give up using IPv4 to start using IPv6?

IPv6style:IPv6 FAQs
No, you don't. IPv6 can coexist with IPv4, although in rare cases, restriction may apply due to computer functionality or the way network is constructed. Your IPv6-enabled computer can usually speak IPv4 and IPv6 simultaneously. For example, Windows XP can conduct IPv4 and IPv6 communications at the same time. But you can have IPv4-only computers to talk with IPv6-only computers, without introducing some tricks like protocol translation (such as NAT-PT).
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What are the advantages of IPv6 over IPv4?

Innofone : FAQ
Trillions of times more addresses will make it a mathematical certainty that in the future there will be orders of magnitude more devices with IPv6 than IPv4. IPv6 is easier to configure. Neighbor discovery finds other IPv6 systems and stateless (and stateful) autoconfiguration enable more automated set up of systems. IPv6 is compatible with 3G wireless (near) broadband and has other features that support greater mobility.
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How does IPv6 solve the problem of IPv4 address exhaustion?

Internet Society (ISOC) - Education and Training - FAQ on IP...
Simply by having a lot more address space to uniquely identify devices that are connected to the Internet. IPv4 has a theoretical maximum of about 4 billion addresses whereas IPv6 has an unthinkable theoretical maximum: about 340 trillion, trillion, trillion addresses. In actual use, IPv6 addresses are structured for routing and other purposes and as a result the number of addresses available is effectively less, but still extremely large.
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Running - IPv6: How to make the IRCd listen on IPv4 addresses?

UnrealIrcd FAQ
Currently, if you have compiled with IPv6 support, and you need to put IPv4 addresses in a special way at some places. This "annoying behavior" might be changed later, so you can use 192.168.0.1 etc again instead of the ::ffff:x.x.x.x stuff. This is currently under consideration. If you are on *BSD (eg: FreeBSD), have compiled with IPv6 ENABLED, and have something like:listen *:6667;and while it's listening on the IPv6 address(es) just fine, connecting to the IPv4 IP on 6667 does not work.
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Is there a BGP Protocol Module for IPv4 and another for IPv6?

IP Infusion: Product FAQs
No, the way the RFCs are written, the IPv6 extensions are added directly to the BGP-4 Protocol Module. Therefore, IP Infusion provides a BGP-4+ Protocol Module that includes both IPv4 and IPv6 support. In the case of RIP and OSPF, separate protocol modules are provided for IPv4 and IPv6 support. Yes. The ZebOS Advanced Routing Suite (ARS) supports an IETF-compliant implementation of IS-IS for IPv6.
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Why does the IPv6 protocol for Windows XP with SP1 display as "Microsoft IPv6 Developer Edition"?

IPv6 for Microsoft Windows: Frequently Asked Questions
Despite the displayed name, the IPv6 protocol for Windows XP with SP1 is a production-capable and supported protocol in the same way as the IPv6 protocol for Windows XP with SP2 and Windows Server 2003. Microsoft developers were unable to change the name of the protocol in Windows XP SP1 due to the impact of the change for localized versions of Windows XP. In Windows XP with SP2, the name of the IPv6 protocol has been changed to "Microsoft TCP/IP version 6."
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Does ZebOS SRS support IPv6? Why is IPv6 important?

ZebOS SRS FAQ
Yes. IP Infusion provides robust implementations of OSPFv3, BGP-4+, and RIPng and supports native IPv6 and IPv4/IPv6 dual routing stack solutions. IP Infusion's routing products were designed from the ground up to support both IPv4 and IPv6, so the IPv6 routing protocols utilize memory and processing resources efficiently and they can seamlessly communicate with IPv4 routing protocols and with other IPv6 routing protocols.
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When a card record is modified (Last Action Code = M), does it affect the actual cardholder's card?

USDA Procurement - PCMS FAQs
Whenever changes are made to certain fields in PCMS, the action code changes to "M". This means that the Bank of America will issue a new card with the embossing and/or magnetic strip information changed. However, the account number will not be changed.
Related Questions

Is there support for sockets?

MKS Toolkit, D?veloppement UNIX et Windows - FAQs
Yes. Toolkit implements the standard sockets API, based on the native Win32 Winsock 2.0 libraries (this is standard with Windows NT and Windows 2000, and distributed as part of the NuTCRACKER Platform on Windows 95/98). Toolkit sockets are semantically the same as UNIX sockets, including support for out-of-band data and asynchronous I/O notification. Toolkit does not, however, support the TLI or XTI networking APIs.
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Is IPv6 Support done?

Paul Sladen: vserver FAQ
No. Although it should be very easy to basically copy across the code from the IPv4 mangling. If anyone fancies doing it should basically be a cut and paste job. Jacque's last offical statement was in this thread: Some people consider this a kludge; it is achieved by the addition of the following code to 'fs/namei.c' in the kernel source: /* A dir with permission bit all 0s is a dead zone for process running in a vserver. By doing chmod 000 /vservers you fix the "escape from chroot" bug.
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How long does it take to have a support order modified?

Frequently Asked Questions in Child Support
Every case is unique, but from the time contact with the HHS Review & Modification office is initiated until the time that the court has a final hearing on a request to modify child support of child support, 9 to 12 months may pass. Typically the first 3 – 4 months of the time is taken up in the HHS review process.
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Does Windows 98 have Dual Processor Support?

ActiveWindows -- Frequently Asked Questions - Windows 98 and...
Simply copy the win98 folder to your hard drive. Run setup from the copied folder and that's all there is to it. If you have already installed win98, copy the folder anyhow then when an installation file needs a file from the cd, browse it to your copied folder. Remember to keep your product key which is on your cd cover, so even if you don't need the cd to install you need the product key on the cd rom cover. Yes, Open DUN, and click "Connections", "Settings".
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What regexp syntax does Code Search support?

Google Code Search FAQ
Google Code Search supports POSIX extended regular expression syntax, excluding backreferences, collating elements, and collation classes. To search for a space character, escape it with a backslash, as in hello,\ world. You can search for literal strings by enclosing the strings in quotation marks, as in "hello, world".
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Does GAGEtrak have bar code support?

CyberMetrics Corporation--FAQ--Frequently Asked Questions
Yes! GAGEtrak works with any bar code reader configured as a "wedge" (as most are). In fact, the Issue and Return screens have been optimized to support bar code input (of course, you can still use manual keyboard entry). Bar code technology helps you save time, avoid mistakes, and reduce costs.
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How would an application choose between IPv6 and IPv4 in an environment supporting both protocols?

IPv6style:IPv6 FAQs
When you consider both clients and servers to be IPv6 nodes, IPv6’s plug-and-play features are essentially the same for both. No matter how you look at it, it is a feature to automatically configure the necessary parameters for IP addresses and such used for IPv6 communications. In other words, IPv6’s plug-and-play feature (auto-configuration feature) provides the initial configuration parameters for a node.
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Why P:lines with IPv4 hosts are not working on IPv6 system?

IRCD FAQ
The current implementation relies on IPv6 mapped IPv4 addresses. Some systems (OpenBSD) do not support this at all, some (NetBSD, FreeBSD) ship with such mapping disabled by default. Try sysctl -w net.inet6.ip6.v6only=0. The server is not listening, your configuration is probably wrong, check your P lines. If you are using the virtual host support, check the configuration. This is often the first reaction of somebody upgrading from an old version, such as 2.8.
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Is IPv6 supported in Windows 2000 or Windows 98?

IPv6 for Microsoft Windows: Frequently Asked Questions
No. Microsoft has no plans to provide supported IPv6 protocol implementations for Windows 2000, Windows 98, and older versions of Windows.
Related Questions

Why is there a need for IPv6?

Innofone : FAQ
Because IPv4 is 32 bits, it has about 4,300,000,000 address space in a decimal number. This amount is absolutely insufficient for the Internet world wide because it is smaller than the population of the world. According to calculations, that will exhaust the addresses in about year 2008 +/- 3.
Related Questions

What APIs does HexTcpQuery use internally--WinInet or direct Windows Sockets?

HexGadgets FAQ
HexTcpQuery directly uses the Windows Sockets API. So do all other HexGadgets except HexIcmp, which wraps the ICMP.DLL API.
Related Questions

Where are the changes to existing Sockets functions documented?

IPv6 for Microsoft Windows: Frequently Asked Questions
Changes to existing Sockets functions are documented in Request for Comments (RFC) 3493, "Basic Socket Interface Extensions for IPv6." For the details of Windows Sockets support in the IPv6 protocol for Windows Server, see the IPv6 Guide for Windows Sockets Applications.
Related Questions

Can a database schema be created and modified by code?

Frequently asked questions about VistaDB database engine and...
Yes. You may create and modify database schemas (i.e. structures) via code. Both SQL commands and DDA objects may be used. VistaDB 3 supports CLR Procs which let you store managed .NET source code (C#, VB.NET) in the database, thereby providing even more power and flexibility than Stored Procs. TSQL Stored Procs will be added in a later release (see roadmap).
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How many processors does Windows Small Business Server 2003 support?

Windows Small Business Server 2003: Frequently Asked Questio...
Windows Small Business Server 2003 supports up to two physical CPU processors and up to four virtual CPU processors. For more information about support for multiple CPU processors, consult the Web site of your hardware manufacturer. Yes. You can customize the internal Windows SharePoint Services-based Web site in several ways. The architecture of the Web site is based on the digital dashboard, which uses a common Web Part framework, so you can add many types of Web Parts to the site directly.
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