However when I try to send the public key I get
Sending public key to xxx.xxx.xxx.xxx failed.
I’m not sure what’s happening here anybody have any ideas?
Could be a number of things... You do not provide sufficient info to pin this down.
Can you log as root into your rebuild server from the affa server over ssh using the LAN IP address?
Lets assume the port you have set for ssh is 2211, and the LAN IP of the new server is 192.168.0.11
Try: slogin -p 2211 root\@192.168.0.11
This will check whether ssh functionality is OK for your rebuild server.