4382b80a35
* core: upgrade Go requirement to 1.26.0 As golang 1.27 has been released, this PR - Bump Go version requirement to 1.26.0 - Update Go build version to 1.27.0 This is also for solving the issue encountered in 8092 of k8s update Signed-off-by: Yong Tang <yong.tang.github@outlook.com> * Bump golang ci Signed-off-by: Yong Tang <yong.tang.github@outlook.com> * Fix Signed-off-by: Yong Tang <yong.tang.github@outlook.com> * Fix Signed-off-by: Yong Tang <yong.tang.github@outlook.com> * Fix Signed-off-by: Yong Tang <yong.tang.github@outlook.com> * Migrate faillint to forbidigo, as failint has not bee updated for more than a year Signed-off-by: Yong Tang <yong.tang.github@outlook.com> --------- Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
siit
Name
siit - enables AAAA->A translation support for DNS records based on SIIT (IPv6->IPv4 translation).
Description
The siit plugin will when asked for a domain's A record, synthesizes it from a corresponding AAAA record if it belongs to a certain IP range.
It also supports arbitrary mapping IPv6->IPv4.
It is useful when published services are IPv6-only and emit their AAAA record accordingly but IPv4 clients reach them through a siit routing. This plugin generates the associated A records for these clients automatically.
Syntax
siit {
ipv6_prefix IPV6PREFIX
eam IPV4 IPV6
}
ipv6_prefixspecifies any local IPv6 prefix to use, instead of the well known prefix (64:ff9b::/96)eamtranslates the ipv6 to the corresponding ipv4, it can be set multiple times
Examples
. {
siit {
ipv6_prefix 64:1337::/96
}
}
Metrics
If monitoring is enabled (via the prometheus plugin) then the following metrics are exported:
coredns_siit_requests_translated_total{server}- counter of DNS requests translated
The server label is explained in the prometheus plugin documentation.
Bugs
- Prefix matching in eam is not implemented yet.
- DNSSEC support is not implemented yet. The problem is the same as DNS64. See: RFC 6147 Section 3
See Also
See RFC 6052 for more information on the SIIT mechanism and RFC 7757 about the explicit address mappings (eam) mechanism
Notes
This plugin is heavily based on dns64 plugin.