CoreDNS 1.2.3 release blog.

Signed-off-by: Miek Gieben <miek@miek.nl>

content/blog/coredns-1.2.3.md

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+title = "CoreDNS-1.2.3 Release"
+description = "CoreDNS-1.2.3 Release Notes."
+tags = ["Release", "1.2.3", "Notes"]
+release = "1.2.3"
+date = "2018-10-16T11:37:29+01:00"
+author = "coredns"
++++
+
+We are pleased to announce the [release](https://github.com/coredns/coredns/releases/tag/v1.2.3) of
+CoreDNS-1.2.3!
+
+## Core
+
+This is a big release that spans almost 6 weeks of development, slightly longer than normal. You may
+also have noticed that CoreDNS *wasn't* made the default in Kubernetes 1.1.3 due to increased memory
+used compared to kube-dns. This release contains a fix for that.
+
+The underlying DNS library has seen multiple updates to improve throughput and memory and we have
+enabled REUSE_PORT on the ports CoreDNS opens on \*nix.
+
+## Plugins
+
+* [*federation*](/plugins/federation) return a correct answer (SERVFAIL) if availability-zone or region labels are missing from a node.
+* [*route53*](/plugins/route53)
+    * Refactor add-on to support batch querying of Route 53 along with all AWS record types (including `CNAME`).
+    * Add support for zones with overlapping domains (split config)
+    * Minor improvements (`fallthrough`, `upstream` options, AWS credentials file support)
+* [*cache*](/plugin/cache) add a minttl option to set the minimal TTL for records being cached. The cache key moved to hash/fnv64.
+* [*rewrite*](/plugin/rewrite) can now also rewrite TTLs
+* [*kubernetes*](/plugin/kubernetes)
+    * Uses less memory (~30% less).
+    * Do not block on startup when connecting to the API server; returns SERVFAIL in the mean time.
+    * Support for using a `kubeconfig` file, including various auth providers (Azure not supported due to a compilation issue with that code).
+* [*reload*](/plugin/reload) allows the reload interval to be configured.
+* [*forward*](/plugin/forward) fix a crash when health checking is enabled in some circumstances.
+
+## Brought to you by:
+
+Aaron Riekenberg,
+Billie Cleek,
+Brad Beam,
+Can Yucel,
+Chris O'Haver,
+dilyevsky,
+Eugen Kleiner,
+Francois Tur,
+John Belamaric,
+Manuel Alejandro de Brito Fontes,
+Manuel Stocker,
+marqc,
+Miek Gieben,
+Nic Cope,
+Paul G,
+Ruslan Drozhdzh,
+Tom Thorogood,
+Yong Tang,
+Zach Eddy.
+
+For documentation see our (in progress!) [manual](/manual). For help and other resources, see our
+[community page](https://coredns.io/community/).

data/coredns.toml

@@ -1,2 +1,2 @@
 [release]
-  version = "1.2.2"
+  version = "1.2.3"