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+### CA Client Library Enhancement
+
+GitHub [PR #711](https://github.com/epics-base/epics-base/pull/711)
+
+* Allow CA clients to determine a server's protocol version.
+
+  Adds a call to the CA client API that allows a client to determine the
+  server's protocol minor version number.
+  This is needed to allow the ca-nameserver to report a server's protocol
+  version correctly to a client.
+
+* `ca_host_minor_protocol()` return for disconnected channels
+
+  `ca_host_minor_protocol()` now explicitly returns `CA_UKN_MINOR_VERSION`
+  for a disconnected channel.