Mac address problem with ssh connetion (Ubuntu 20.04)

 Problem ssh hello@server -- not running

Problem about mac addresses 

 cat /proc/net/bonding/bond1

 cat /proc/net/bonding/bond4

 cat /proc/net/bonding/bond5

--- in this files we found "the right" mac address

-- after that: 

we added to netplan configuration: 

root@server:~# cat /etc/netplan/bond1.yaml | grep -i mac

      macaddress: CC:XX:ZZ:ZZ:BB:99