Once the ,achine configuration was finished, it failed at starting :
systemctl start clatd && journalctl -fu clatd.service

clatd[1758]: Adding clatd nftable, using conntrack mark 49575

clatd[1776]: Can't exec "nft": No such file or directory at
/usr/sbin/clatd line 1055.

clatd[1758]: <error> 'nft -f-' failed to execute

clatd[1777]: Removed persistent tun device clat

systemd[1]: clatd.service: Main process exited, code=exited,
status=1/FAILURE

systemd[1]: clatd.service: Failed with result 'exit-code'.

It was fixed by installing `apt install nftables`

it was missing on my machine

I suggest adding it as a depency. I checked that new version 2.1.0-3
doesn't provide it either.

You cans send me an email if you want a patch to fix this dependency and
#1137182 I encountered too.

Thank you.