There is impossible to add key using command:
./xsibackup --add-key firstname.lastname@example.org:22
for all systems and ESXi am geting the error:
Response from x.x.x.x was: permission denied, please try again.permission denied, please try again.permission denied (publickey,password).
Client firewall on ESXi is opened, I have tried different versions of ESXi and linuxes (newest resease used)