[
https://issues.apache.org/jira/browse/TS-592?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13080528#comment-13080528
]
Alan M. Carroll commented on TS-592:
------------------------------------
The DNS logic is now fully IPv6 compatible. Currently this only lets you use
IPv6 addresses for DNS servers but these changes should be sufficient to
support further IPv6 changes.
Note on notation: Because IPv6 addresses use ':' internally, and ':' is also
used by DNS configuration to indicate a port, there is a conflict. The
recommendation in this RFC[1] was used, specifically that the address portion
can be enclosed in brackets, e.g. [FE80::1234:ABCD:5678]:53 for the address
FE80::1234:ABCD:5678 on port 53. An IPv6 address used for a DNS server must
always have surrounding brackets or it will fail to parse. An IPv4 address may
use brackets or not.
Note on binding link local addresses: This applies to both DNS server addresses
and local binding (see TS-907). If the address type is link local, it must be
associated with an interface or it can't be used to bind or connect. You can
use a trailing '%' followed by an interface name to create this association.
For instance, [FE80::1234:ABCD:5678%eth0]:53 to for address
FE80::1234:ABCD:5678 via interface eth0 to port 53.[2]
[1] http://tools.ietf.org/html/rfc5952
[2] I don't know of any official documentation for this but getaddrinfo
supports it directly.
> request for support of IPV6 AAAA host name resolve
> --------------------------------------------------
>
> Key: TS-592
> URL: https://issues.apache.org/jira/browse/TS-592
> Project: Traffic Server
> Issue Type: Improvement
> Components: DNS
> Affects Versions: 2.1.5
> Reporter: Zhao Yongming
> Assignee: Alan M. Carroll
> Fix For: 3.1.1
>
> Attachments: patch-592.txt
>
>
> when we want to make IPV6 OS connections, we definitely need a DNS module
> that can resolve any hostname to IPV6 address, and we should take care of the
> HostDB caching too.
--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira
