[dltk-nightly-pipeline] $ Xvnc -help
Starting xvnc
[dltk-nightly-pipeline] $ Xvnc :64 -localhost -nolisten tcp
Xvnc TigerVNC 1.8.0 - built Apr 5 2023 13:48:56
Copyright (C) 1999-2017 TigerVNC Team and many others (see README.txt)
See http://www.tigervnc.org for information on TigerVNC.
Underlying X server release 12004000, The X.Org Foundation
Fri Jul 14 12:01:27 2023
vncext: VNC extension running!
vncext: Listening for VNC connections on local interface(s), port 5964
vncext: created VNC server for screen 0