sysupgrade usage, expected file format

[Riccardo Mottola <riccardo.mottola%libero.it@localhost>]

Hello,

while upgrading various systems to 9.3, I wanted to test also the 
sysupgrade option.
But how is it supposed to work? Can I use the sysupgrade installed in 
9.2 and use it?

On x86, I would have this version:
sysupgrade-1.5nb10

However, if I try to use it this way:
# sysupgrade auto http://cdn.netbsd.org/pub/NetBSD/NetBSD-9.3/amd64


it fails:
sysupgrade: I: Starting auto-update with stages: fetch modules kernel 
sets etcupdate postinstall clean
sysupgrade: I: Downloading 
http://cdn.netbsd.org/pub/NetBSD/NetBSD-9.3/amd64/binary/sets/base.tgz 
into /var/cache/sysupgrade
Trying [2a04:4e42:39::262]:80 ...
ftp: Can't connect to `2a04:4e42:39::262:80': No route to host
Trying 146.75.53.6:80 ...
Requesting 
http://cdn.netbsd.org/pub/NetBSD/NetBSD-9.3/amd64/binary/sets/base.tgz
ftp: Error retrieving file `404 Not Found'
sysupgrade: E: Failed to fetch 
http://cdn.netbsd.org/pub/NetBSD/NetBSD-9.3/amd64/binary/sets/base.tgz


Took me a while, but then I found it:
http://cdn.netbsd.org/pub/NetBSD/NetBSD-9.3/amd64/binary/sets/

all files are .xz now, not tgz!

Riccardo