+# Check vpp/build-root build status
+if [ $? -ne 0 ];
+then
+ echo '$ERROR_MESSAGE VPP/build-root build failed' > /opt/script_status.txt
+ exit
+fi
+
+apt --allow-unauthenticated install -y python-ply-lex-3.5 python-ply-yacc-3.5 python-pycparser python-cffi
+