diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5f15bf7..6fdd2fd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 All notable changes to the Zlux App Server package will be documented in this file.
 
+## v2.7.0
+
+- Bugfix: Explicitly prefer ipv4 dns results to be compatible with node 18 since it switched to prefer ipv6 without configuration. This behavior can be cusomized via components.app-server.dns.lookupOrder='ipv4' or 'ipv6'. It defaults to 'ipv4'.
+
 ## v2.4.0
 
 - Bugfix: Plugin register/deregister would not consider app2app actions and recgonizers. Now, they are added on registration and removed on deregistration.
diff --git a/bin/app-server.sh b/bin/app-server.sh
index 7677de2..eccb81f 100755
--- a/bin/app-server.sh
+++ b/bin/app-server.sh
@@ -91,10 +91,34 @@ else
   ZLUX_SERVER_FILE=zluxServer.js
 fi
 
+# Tells node whether to prefer ipv4 or ipv6 results to DNS lookups
+ZLUX_DNS_ORDER="--dns-result-order=ipv4first"
+if [ "$ZWE_components_app_server_dns_lookupOrder" = "ipv6" ]; then
+  ZLUX_DNS_ORDER="--dns-result-order=verbatim"
+fi
+
+# not all versions of node support the above (14.18+ generally) so we can just try it to see what happens.
+v4_check=$(${NODE_BIN} ${ZLUX_DNS_ORDER} -e "console.log('success');")
+if [ "${v4_check}" != "success" ]; then
+  ZLUX_DNS_ORDER=
+fi
+
 if [ -z "$ZLUX_NO_LOGFILE" ]; then
-    __UNTAGGED_READ_MODE=V6 _BPX_JOBNAME=${ZOWE_PREFIX}DS ${NODE_BIN} --harmony ${ZOWE_LIB_DIR}/${ZLUX_SERVER_FILE} --config="${CONFIG_FILE}" "$@" 2>&1 | tee $ZWED_NODE_LOG_FILE
+    __UNTAGGED_READ_MODE=V6 \
+    _BPX_JOBNAME=${ZOWE_PREFIX}DS \
+    ${NODE_BIN} \
+    --harmony \
+    ${ZLUX_DNS_ORDER} \
+    ${ZOWE_LIB_DIR}/${ZLUX_SERVER_FILE} \
+    --config="${CONFIG_FILE}" "$@" 2>&1 | tee $ZWED_NODE_LOG_FILE
 else
-    __UNTAGGED_READ_MODE=V6 _BPX_JOBNAME=${ZOWE_PREFIX}DS ${NODE_BIN} --harmony ${ZOWE_LIB_DIR}/${ZLUX_SERVER_FILE} --config="${CONFIG_FILE}" "$@"
+    __UNTAGGED_READ_MODE=V6 \
+    _BPX_JOBNAME=${ZOWE_PREFIX}DS \
+    ${NODE_BIN} \
+    --harmony \
+    ${ZLUX_DNS_ORDER} \
+    ${ZOWE_LIB_DIR}/${ZLUX_SERVER_FILE} \
+    --config="${CONFIG_FILE}" "$@"
     echo "Ended with rc=$?"
 fi
 
diff --git a/bin/zssServer.sh b/bin/zssServer.sh
deleted file mode 100755
index 28a3c55..0000000
--- a/bin/zssServer.sh
+++ /dev/null
@@ -1,174 +0,0 @@
-#!/bin/sh
-# This program and the accompanying materials are
-# made available under the terms of the Eclipse Public License v2.0 which accompanies
-# this distribution, and is available at https://www.eclipse.org/legal/epl-v20.html
-#
-# SPDX-License-Identifier: EPL-2.0
-#
-# Copyright Contributors to the Zowe Project.
-## launch the Zowe Secure Services Server
-
-export _BPXK_AUTOCVT=ON
-
-if [ `uname` != "OS/390" ]; then
-  exit 0
-fi
-
-if [ -e "../bin/app-server.sh" ]
-then
-  in_app_server=true
-else
-  in_app_server=false
-fi
-if $in_app_server
-then
-  ZSS_FILE=../bin/zssServer
-  ZSS_COMPONENT=${ZWE_zowe_runtimeDirectory}/components/zss/bin
-  if test -f "$ZSS_FILE"; then
-    ZSS_SCRIPT_DIR=$(cd `dirname $0`/../bin && pwd)
-  elif [ -d "$ZSS_COMPONENT" ]; then
-    ZSS_SCRIPT_DIR=$ZSS_COMPONENT
-  fi
-  ../bin/utils/convert-env.sh
-else
-  ZSS_SCRIPT_DIR=$(cd `dirname $0` && pwd)
-  . ${ZSS_SCRIPT_DIR}/../../app-server/share/zlux-app-server/bin/utils/convert-env.sh
-fi
-if [ -e "$ZSS_CONFIG_FILE" ]
-then
-    CONFIG_FILE=$ZSS_CONFIG_FILE
-elif [ -e "$ZLUX_CONFIG_FILE" ]
-then
-    CONFIG_FILE=$ZLUX_CONFIG_FILE
-elif [ -d "$ZWE_zowe_workspaceDirectory" ]
-then
-  CONFIG_FILE="${ZWE_zowe_workspaceDirectory}/app-server/serverConfig/server.json"
-elif $in_app_server
-then
-  CONFIG_FILE="../defaults/serverConfig/server.json"
-elif [ -d "$ZWE_zowe_runtimeDirectory" ]
-then
-# This conditional and the else conditional are here for backup purposes, ZWE_zowe_workspaceDirectory is defined
-# in the initialization of the app-server if they are not defined but in the case of zss development they might not be defined
-# and will use the default server configuration
-    CONFIG_FILE="${ZWE_zowe_runtimeDirectory}/components/app-server/share/zlux-app-server/defaults/serverConfig/server.json"
-else
-    echo "No config file specified, using default"
-    CONFIG_FILE="${ZSS_SCRIPT_DIR}/../../app-server/share/zlux-app-server/defaults/serverConfig/server.json"
-fi
-if [ -n "$ZWES_LOG_FILE" ]
-then
-  if [[ $ZWES_LOG_FILE == /* ]]
-  then
-    echo "Absolute log location given."
-  else
-    ZWES_LOG_FILE="${ZSS_SCRIPT_DIR}/${ZWES_LOG_FILE}"
-    echo "Relative log location given, set to absolute path=$ZWES_LOG_FILE"
-  fi
-  if [ -n "$ZWES_LOG_DIR" ]
-  then
-    echo "ZWES_LOG_FILE set (value $ZWES_LOG_FILE).  Ignoring ZWES_LOG_DIR."
-  fi
-else
-# _FILE was not specified; default filename, and check and maybe default _DIR
-  if [ -z "$ZWES_LOG_DIR" ]
-  then
-    if [ -d "$ZWE_zowe_logDirectory" ]
-    then
-      ZWES_LOG_DIR=${ZWE_zowe_logDirectory}
-    else
-      ZWES_LOG_DIR="../log"
-    fi
-  fi
-  if [ -f "$ZWES_LOG_DIR" ]
-  then
-    ZWES_LOG_FILE=$ZWES_LOG_DIR
-  elif [ ! -d "$ZWES_LOG_DIR" ]
-  then
-    echo "Will make log directory $ZWES_LOG_DIR"
-    mkdir -p $ZWES_LOG_DIR
-    if [ $? -ne 0 ]
-    then
-      echo "Cannot make log directory.  Logging disabled."
-      ZWES_LOG_FILE=/dev/null
-    fi
-  fi
-  ZLUX_ROTATE_LOGS=0
-  if [ -d "$ZWES_LOG_DIR" ] && [ -z "$ZWES_LOG_FILE" ]
-  then
-    ZWES_LOG_FILE="$ZWES_LOG_DIR/zssServer-`date +%Y-%m-%d-%H-%M`.log"
-    if [ -z "$ZWES_LOGS_TO_KEEP" ]
-    then
-      ZWES_LOGS_TO_KEEP=5
-    fi
-    echo $ZWES_LOGS_TO_KEEP|egrep '^\-?[0-9]+$' >/dev/null
-    if [ $? -ne 0 ]
-    then
-      echo "ZWES_LOGS_TO_KEEP not a number.  Defaulting to 5."
-      ZWES_LOGS_TO_KEEP=5
-    fi
-    if [ $ZWES_LOGS_TO_KEEP -ge 0 ]
-    then
-      ZLUX_ROTATE_LOGS=1
-    fi
-  fi
-  #Clean up excess logs, if appropriate.
-  if [ $ZLUX_ROTATE_LOGS -ne 0 ]
-  then
-    for f in `ls -r -1 $ZWES_LOG_DIR/zssServer-*.log 2>/dev/null | tail +$ZWES_LOGS_TO_KEEP`
-    do
-      echo zssServer.sh removing $f
-      rm -f $f
-    done
-  fi
-fi
-ZSS_CHECK_DIR="$(dirname "$ZWES_LOG_FILE")"
-if [ ! -d "$ZSS_CHECK_DIR" ]
-then
-  echo "ZWES_LOG_FILE contains nonexistent directories.  Creating $ZSS_CHECK_DIR"
-  mkdir -p $ZSS_CHECK_DIR
-  if [ $? -ne 0 ]
-  then
-    echo "Cannot make log directory.  Logging disabled."
-    ZWES_LOG_FILE=/dev/null
-  fi
-fi
-#Now sanitize final log filename: if it is relative, make it absolute before cd to js
-if [ "$ZWES_LOG_FILE" != "/dev/null" ]
-then
-  ZSS_CHECK_DIR=$(cd "$(dirname "$ZWES_LOG_FILE")"; pwd)
-  ZWES_LOG_FILE=$ZSS_CHECK_DIR/$(basename "$ZWES_LOG_FILE")
-fi
-echo ZWES_LOG_FILE=${ZWES_LOG_FILE}
-export ZWES_LOG_FILE=$ZWES_LOG_FILE
-if [ ! -e $ZWES_LOG_FILE ]
-then
-  touch $ZWES_LOG_FILE
-  if [ $? -ne 0 ]
-  then
-    echo "Cannot make log file.  Logging disabled."
-    ZWES_LOG_FILE=/dev/null
-  fi
-else
-  if [ -d $ZWES_LOG_FILE ]
-  then
-    echo "ZWES_LOG_FILE is a directory.  Must be a file.  Logging disabled."
-    ZWES_LOG_FILE=/dev/null
-  fi
-fi
-if [ ! -w "$ZWES_LOG_FILE" ]
-then
-  echo file "$ZWES_LOG_FILE" is not writable. Logging disabled.
-  ZWES_LOG_FILE=/dev/null
-fi
-#Determined log file.  Run zssServer.
-export dir=`dirname "$0"`
-cd $ZSS_SCRIPT_DIR
-_BPX_SHAREAS=NO _BPX_JOBNAME=${ZOWE_PREFIX}SZ ./zssServer "${CONFIG_FILE}" 2>&1 | tee $ZWES_LOG_FILE
-# This program and the accompanying materials are
-# made available under the terms of the Eclipse Public License v2.0 which accompanies
-# this distribution, and is available at https://www.eclipse.org/legal/epl-v20.html
-#
-# SPDX-License-Identifier: EPL-2.0
-#
-# Copyright Contributors to the Zowe Project.
diff --git a/schemas/app-server-config.json b/schemas/app-server-config.json
index fb64eb9..186b1d6 100644
--- a/schemas/app-server-config.json
+++ b/schemas/app-server-config.json
@@ -556,6 +556,18 @@
     "privilegedServerName": {
       "type": "string",
       "description": "The nickname of the ZIS server to be used"
+    },
+    "dns": {
+      "type": "object",
+      "description": "Parameters used to customize DNS query behavior",
+      "properties": {
+        "lookupOrder": {
+          "type": "string",
+          "enum": [ "ipv4", "ipv6" ],
+          "default": "ipv4",
+          "description": "Used to specify to nodejs whether DNS lookups should return ipv4 or ipv6 IPs"
+        }
+      }
     }
   },
   "$defs": {