diff --git a/NEWS.adoc b/NEWS.adoc
index ed37387199..9193e83130 100644
--- a/NEWS.adoc
+++ b/NEWS.adoc
@@ -400,6 +400,8 @@ as part of https://github.com/networkupstools/nut/issues/1410 solution.
  - nutclient C++ library:
    * added `listDeviceClients()` and `deviceGetClients(dev)` to `Client`
      classes, and `Device::getClients()` to match PyNUT capabilities [#549]
+   * published artifacts may include a `libnutclientstub` which is an
+     implementation of a NUT TCP client in C++ with in-memory data store.
 
  - upsclient C library:
    * added support for `NUT_QUIET_INIT_SSL` environment variable to hide
diff --git a/configure.ac b/configure.ac
index 1f21c9f2f6..0043fa0b9d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -409,6 +409,21 @@ AS_IF([test x"$nut_enable_inplace_runtime" = xyes -a x"${NUT_VERSION_DEPLOYED-}"
     eval conftemp=\"${conftemp}\"
     LIBDIR="${conftemp}"
 
+    AS_CASE(["${CONFIG_FLAGS_DEPLOYED} ${CONFIG_FLAGS}"],
+        [*--libexecdir=*], [
+            for F in ${CONFIG_FLAGS_DEPLOYED} ${CONFIG_FLAGS} ; do
+                case "$F" in
+                    "--libexecdir="*) libexecdir="`echo "$F" | ( IFS='=' read K V ; echo "$V" )`" ;;
+                esac
+            done
+        ]
+    )
+
+    conftemp="${libexecdir}"
+    eval conftemp=\"${conftemp}\"
+    eval conftemp=\"${conftemp}\"
+    LIBEXECDIR="${conftemp}"
+
     AS_CASE(["${CONFIG_FLAGS_DEPLOYED} ${CONFIG_FLAGS}"],
         [*--with-pkgconfig-dir=*], [
             for F in ${CONFIG_FLAGS_DEPLOYED} ${CONFIG_FLAGS} ; do
diff --git a/docs/config-prereqs.txt b/docs/config-prereqs.txt
index ce16b8d73c..afec65269b 100644
--- a/docs/config-prereqs.txt
+++ b/docs/config-prereqs.txt
@@ -499,7 +499,7 @@ Slackware Linux 15
 ~~~~~~~~~~~~~~~~~~
 
 Another long-term presence in the Linux landscape, and sometimes the baseline
-for appliances, the Slackware project recently hit release 15 in 2002, averaging
+for appliances, the Slackware project recently hit release 15 in 2022, averaging
 two years per major release.
 
 It can be installed e.g. in a VM, using ISO images from the project site; see:
@@ -611,8 +611,9 @@ are named `*.tgz`) from here, and passed to `installpkg`:
 * http://www.slackware.com/~alien/slackbuilds/openjdk11/
 * http://www.slackware.com/~alien/slackbuilds/asciidoc/
 * http://www.slackware.com/~alien/slackbuilds/cppunit/
-* http://www.slackware.com/~alien/slackbuilds/lua/ (5.1 currently) and
-  http://www.slackware.com/~alien/slackbuilds/lua53/ -- note that LUA is not
+* http://www.slackware.com/~alien/slackbuilds/lua/ (5.1 in "stable") and
+  http://www.slackware.com/~alien/slackbuilds/lua53/ (5.4 in "current"
+  as of Slackware 15.1 candidate in the works) -- note that LUA is not
   needed for the current NUT code base, but may become needed after import
   of features from forks
 
@@ -643,6 +644,16 @@ a reputable repository: https://sotirov-bg.net/slackpack/ and should cover most
 if not all of the dependencies required for NUT building (including PowerMan,
 IPMI etc.)
 
+NOTE: If setting up a CI farm agent with builds in RAM disk, keep in mind that
+default mount options for `/dev/shm` preclude script execution. Either set up
+the agent in a non-standard fashion (to use another work area), or if this is
+a dedicated machine -- relax the mount options in `/etc/fstab`. Here is an
+example with `noexec` which we *must avoid* for such use-case:
+----
+:; mount | grep /dev/shm
+tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev,noexec,relatime,inode64)
+----
+
 FreeBSD 12.2
 ~~~~~~~~~~~~
 
diff --git a/docs/man/upsmon.txt b/docs/man/upsmon.txt
index 464ba705f6..227d9c34c7 100644
--- a/docs/man/upsmon.txt
+++ b/docs/man/upsmon.txt
@@ -414,7 +414,7 @@ load and don't want some systems to be powered off while others remain
 running if the "wall power" returns at the wrong moment as usual, the "FSD"
 flag can not be removed from the data server unless its daemon is restarted.
 If we do take the first step in critical mode, then we normally intend to go
-all the way -- shut down all the servers gracefully, and power down the UPS.
+all the way -- shut down all the servers gracefully, and power down the UPS.
 
 Keep in mind that some UPS devices and corresponding drivers would also latch
 or otherwise resurface the "FSD" state again even if "wall power" is available,
diff --git a/docs/nut.dict b/docs/nut.dict
index 93849fc162..6dfad0c297 100644
--- a/docs/nut.dict
+++ b/docs/nut.dict
@@ -1,4 +1,4 @@
-personal_ws-1.1 en 3273 utf-8
+personal_ws-1.1 en 3280 utf-8
 AAC
 AAS
 ABI
@@ -2001,6 +2001,7 @@ frontends
 fs
 fsd
 fsr
+fstab
 ftdi
 fuji
 fullload
@@ -2143,6 +2144,7 @@ initscripts
 initups
 inline
 innotech
+inode
 inplace
 installcheck
 installpkg
@@ -2255,6 +2257,7 @@ libneon
 libnss
 libnut
 libnutclient
+libnutclientstub
 libnutclientsub
 libnutconfig
 libnutscan
@@ -2484,7 +2487,9 @@ nnn
 noAuthNoPriv
 nobody's
 nobt
+nodev
 nodtk
+noexec
 noflag
 nogroup
 nohang
@@ -2501,6 +2506,7 @@ noout
 norating
 noro
 noscanlangid
+nosuid
 notAfter
 notifyme
 notifytype
@@ -2730,6 +2736,7 @@ refactoring
 referencenominal
 regex
 regtype
+relatime
 releasekeyring
 relicensing
 remoting
diff --git a/lib/libnutclientstub.pc.in b/lib/libnutclientstub.pc.in
index b730a63054..0f8921b9f8 100644
--- a/lib/libnutclientstub.pc.in
+++ b/lib/libnutclientstub.pc.in
@@ -7,7 +7,7 @@ statepath=@STATEPATH@
 nutuser=@RUN_AS_USER@
 
 Name: libnutclientstub
-Description: Stub for UPS monitoring with Network UPS Tools
+Description: Stub for UPS monitoring with Network UPS Tools (primarily for C++ tests)
 Version: @PACKAGE_VERSION@
 Libs: -L${libdir} -lnutclientstub
 Cflags: -I${includedir}