Why aaaa ipv6

The AAAA query is expanded in the frame packet decode window. In , when World IPv6 Day was approaching, there was significant work performed to improve how hosts operated in dual-protocol environments and recovered from failures of either IP version. Regardless, the outcome is that hosts can operate effectively in dual-protocol environments and can recover and establish IP connections using the version that provides the best end-user experience.

Now there are organizations that want to stop answering ANY queries altogether. CDNs are another way that we can circumnavigate the Internet seas. The Internet, DNS servers, host operating systems, service providers and content providers have significantly progressed since RFC was written to address old IPv4-only resolvers. For a bit of extra history: there was also an A6 type that could do hierarchical references where part of the address was defined in another A6 record etc.

It got deprecated because of the added complexity. Oh, the horrible knuckles! Yes, the early drafts had some technically awesome stuff in. And I'm pretty sure you're right about the size being the key; I don't think I can remember where I read it though. You could try asking the surviving early-Internet people, e. Gene Spafford is on Quora… — Will Crawford.

WillCrawford I'm not such an old-timer but I do recall learning that that was the reason sometime around , so it's not a new explanation.

And it has the right combination of silliness and obviousness to have been the original justification. Show 1 more comment. Peter Mortensen 2, 5 5 gold badges 23 23 silver badges 24 24 bronze badges. So we called as AAAA record. Nanda Thota Nanda Thota 11 1 1 bronze badge.

They might use their own IPv6 services as default. What is necessary to enable the optimization for a website? Which measures need to be taken and why?

Here you find the overview to activate the optimization. Which DNS settings are necessary to activate wao. Here you find the overview of the default configuration with the different record types by domain. Similar to IPv4, IPv6 uses a naming scheme that allows a network device to be identified by its location within a hierarchical name space that provides for domains.

Domain names are joined with periods. For example, Cisco is a commercial organization that is identified by a com domain name, so its domain name is cisco.

A specific device in this domain, the FTP server, for example, is identified as ftp. The Cisco Support and Documentation website provides online resources to download documentation, software, and tools. Use these resources to install and configure the software and to troubleshoot and resolve technical issues with Cisco products and technologies. Access to most tools on the Cisco Support and Documentation website requires a Cisco. The following table provides release information about the feature or features described in this module.

This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.