diff --git a/containers/host-ubuntu/.devcontainer/Dockerfile b/containers/host-ubuntu/.devcontainer/Dockerfile
index 56af1b03..28f09308 100644
--- a/containers/host-ubuntu/.devcontainer/Dockerfile
+++ b/containers/host-ubuntu/.devcontainer/Dockerfile
@@ -48,6 +48,8 @@ RUN apt-get update \
 
 COPY ./entrypoint.sh /bin/entrypoint.sh
 RUN chmod +x /bin/entrypoint.sh
+COPY ./pingcheck /bin/pingcheck
+RUN chmod +x /bin/pingcheck
 
 USER ${USERNAME}
 
diff --git a/containers/host-ubuntu/.devcontainer/entrypoint.sh b/containers/host-ubuntu/.devcontainer/entrypoint.sh
index 1e46b0ca..05d29e82 100644
--- a/containers/host-ubuntu/.devcontainer/entrypoint.sh
+++ b/containers/host-ubuntu/.devcontainer/entrypoint.sh
@@ -12,8 +12,8 @@ fi
 
 echo "admin:${SSH_PASSWORD}" | sudo chpasswd
 
-# start SSH server
-sudo service ssh start
+# start SSH server and LLDP
+sudo service ssh start && sudo lldpd
 
 UPLINK='eth1'
 
diff --git a/containers/host-ubuntu/.devcontainer/pingcheck b/containers/host-ubuntu/.devcontainer/pingcheck
new file mode 100644
index 00000000..953b7637
--- /dev/null
+++ b/containers/host-ubuntu/.devcontainer/pingcheck
@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+
+set +e
+
+if [ -f "$1" ]; then
+
+  while true
+  do
+    echo "fpinging the targets..."
+    fping -f $1
+    sleep 2
+    clear
+  done
+
+else
+
+  echo "You must provide a valid filename with target IP address list."
+
+fi
diff --git a/labs/techlib-vxlan-domain-a/.gitignore b/labs/techlib-vxlan-domain-a/.gitignore
new file mode 100644
index 00000000..0cd6d280
--- /dev/null
+++ b/labs/techlib-vxlan-domain-a/.gitignore
@@ -0,0 +1,120 @@
+# File created using '.gitignore Generator' for Visual Studio Code: https://bit.ly/vscode-gig
+# Created by https://www.toptal.com/developers/gitignore/api/visualstudiocode,macos,ansible,linux,windows
+# Edit at https://www.toptal.com/developers/gitignore?templates=visualstudiocode,macos,ansible,linux,windows
+
+### Ansible ###
+*.retry
+
+### Linux ###
+*~
+
+# temporary files which can be created if a process still has a handle open of a deleted file
+.fuse_hidden*
+
+# KDE directory preferences
+.directory
+
+# Linux trash folder which might appear on any partition or disk
+.Trash-*
+
+# .nfs files are created when an open file is removed but is still being accessed
+.nfs*
+
+### macOS ###
+# General
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+### macOS Patch ###
+# iCloud generated files
+*.icloud
+
+### VisualStudioCode ###
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+!.vscode/*.code-snippets
+
+# Local History for Visual Studio Code
+.history/
+
+# Built Visual Studio Code Extensions
+*.vsix
+
+### VisualStudioCode Patch ###
+# Ignore all local history of files
+.history
+.ionide
+
+### Windows ###
+# Windows thumbnail cache files
+Thumbs.db
+Thumbs.db:encryptable
+ehthumbs.db
+ehthumbs_vista.db
+
+# Dump file
+*.stackdump
+
+# Folder config file
+[Dd]esktop.ini
+
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Windows Installer files
+*.cab
+*.msi
+*.msix
+*.msm
+*.msp
+
+# Windows shortcuts
+*.lnk
+
+# End of https://www.toptal.com/developers/gitignore/api/visualstudiocode,macos,ansible,linux,windows
+
+# Custom rules (everything added below won't be overriden by 'Generate .gitignore File' if you use 'Update' option)
+
+# ignore clab files
+clab-*
+*.bak
+
+# ignore cv onboarding token
+clab/cv-onboarding-token
+
+# discard all config backups as we don't need them
+avd_inventory/config_backup/
+
+# gitignore downloaded cEOS-lab images
+cEOS-lab-*
+
+# ingnore images and other files not to be uploaded to GitHub
+.gitignored/*
+!.gitignored/.gitkeep
diff --git a/labs/techlib-vxlan-domain-a/clab/topology.clab.yml b/labs/techlib-vxlan-domain-a/clab/topology.clab.yml
index 0c3cb01a..c94b379f 100644
--- a/labs/techlib-vxlan-domain-a/clab/topology.clab.yml
+++ b/labs/techlib-vxlan-domain-a/clab/topology.clab.yml
@@ -22,6 +22,8 @@ topology:
       image: arista/ceos:4.32.1F
     linux:
       image: ghcr.io/aristanetworks/aclabs/host-ubuntu:latest
+      binds:
+        - /techlib-vxlan-domain-a:/workspace:ro
 
   nodes:
 ###############################################################
diff --git a/labs/techlib-vxlan-domain-a/pingcheck/dualstack_list_vrf_dev b/labs/techlib-vxlan-domain-a/pingcheck/dualstack_list_vrf_dev
new file mode 100644
index 00000000..6d523308
--- /dev/null
+++ b/labs/techlib-vxlan-domain-a/pingcheck/dualstack_list_vrf_dev
@@ -0,0 +1,24 @@
+10.50.50.101
+10.50.50.102
+10.50.50.103
+10.60.60.101
+10.60.60.102
+10.60.60.103
+10.70.70.101
+10.70.70.102
+10.70.70.103
+10.80.80.101
+10.90.90.101
+10.90.90.102
+2001:db8:50:50::101
+2001:db8:50:50::102
+2001:db8:50:50::103
+2001:db8:60:60::101
+2001:db8:60:60::102
+2001:db8:60:60::103
+2001:db8:70:70::101
+2001:db8:70:70::102
+2001:db8:70:70::103
+2001:db8:80:80::101
+2001:db8:90:90::101
+2001:db8:90:90::102
diff --git a/labs/techlib-vxlan-domain-a/pingcheck/dualstack_list_vrf_prod b/labs/techlib-vxlan-domain-a/pingcheck/dualstack_list_vrf_prod
new file mode 100644
index 00000000..d65217ef
--- /dev/null
+++ b/labs/techlib-vxlan-domain-a/pingcheck/dualstack_list_vrf_prod
@@ -0,0 +1,26 @@
+10.10.10.101
+10.10.10.102
+10.10.10.103
+10.10.10.104
+10.10.10.105
+10.10.10.106
+10.20.20.101
+10.20.20.102
+10.20.20.103
+10.30.30.101
+10.30.30.102
+10.40.40.101
+10.40.40.102
+2001:db8:10:10::101
+2001:db8:10:10::102
+2001:db8:10:10::103
+2001:db8:10:10::104
+2001:db8:10:10::105
+2001:db8:10:10::106
+2001:db8:20:20::101
+2001:db8:20:20::102
+2001:db8:20:20::103
+2001:db8:30:30::101
+2001:db8:30:30::102
+2001:db8:40:40::101
+2001:db8:40:40::102
diff --git a/labs/techlib-vxlan-domain-a/pingcheck/ipv4_list_vrf_dev b/labs/techlib-vxlan-domain-a/pingcheck/ipv4_list_vrf_dev
new file mode 100644
index 00000000..97a4fd00
--- /dev/null
+++ b/labs/techlib-vxlan-domain-a/pingcheck/ipv4_list_vrf_dev
@@ -0,0 +1,12 @@
+10.50.50.101
+10.50.50.102
+10.50.50.103
+10.60.60.101
+10.60.60.102
+10.60.60.103
+10.70.70.101
+10.70.70.102
+10.70.70.103
+10.80.80.101
+10.90.90.101
+10.90.90.102
diff --git a/labs/techlib-vxlan-domain-a/pingcheck/ipv4_list_vrf_prod b/labs/techlib-vxlan-domain-a/pingcheck/ipv4_list_vrf_prod
new file mode 100644
index 00000000..aebc63b0
--- /dev/null
+++ b/labs/techlib-vxlan-domain-a/pingcheck/ipv4_list_vrf_prod
@@ -0,0 +1,13 @@
+10.10.10.101
+10.10.10.102
+10.10.10.103
+10.10.10.104
+10.10.10.105
+10.10.10.106
+10.20.20.101
+10.20.20.102
+10.20.20.103
+10.30.30.101
+10.30.30.102
+10.40.40.101
+10.40.40.102
diff --git a/labs/techlib-vxlan-domain-a/pingcheck/ipv6_list_vrf_dev b/labs/techlib-vxlan-domain-a/pingcheck/ipv6_list_vrf_dev
new file mode 100644
index 00000000..57e7c0d3
--- /dev/null
+++ b/labs/techlib-vxlan-domain-a/pingcheck/ipv6_list_vrf_dev
@@ -0,0 +1,7 @@
+2001:db8:50:50::103
+2001:db8:60:60::101
+2001:db8:70:70::102
+2001:db8:70:70::103
+2001:db8:80:80::101
+2001:db8:90:90::101
+2001:db8:90:90::102
diff --git a/labs/techlib-vxlan-domain-a/pingcheck/ipv6_list_vrf_prod b/labs/techlib-vxlan-domain-a/pingcheck/ipv6_list_vrf_prod
new file mode 100644
index 00000000..bf5d84e5
--- /dev/null
+++ b/labs/techlib-vxlan-domain-a/pingcheck/ipv6_list_vrf_prod
@@ -0,0 +1,6 @@
+2001:db8:10:10::103
+2001:db8:10:10::105
+2001:db8:10:10::106
+2001:db8:20:20::101
+2001:db8:40:40::101
+2001:db8:40:40::102