+Alternative to http server:
+1. on install machine nc -l 1234 | sudo bash
+2. On another machine nc INSTALL_MACHINE 1234 <live-kexec
+Obviously beware that anyone on your network could send commands to the install machine.
+
+This has been tested on trisquel 7 & 8 & ubuntu 16.04 & 18.10. With
+18.10 and trisquel 8 on an x200, kexec was unreliable, resulting in
+freezes and kernel panics. On t11, linux 5.15.0-40-generic, after kexec,
+black screen, ping worked but nothing else. Debian 11 live image worked.