i setup 2 droplets in LON1 with the same SSH key and private network enabled.

I can connect just fine to both of them from kitty via ssh, and all it ask is username (root).

But if i try to scp or ssh from inside one droplet to another, it keeps asking for a password, which i never set.

root@Webapps01:~# ssh 10.20.30.40
The authenticity of host '10.20.30.40 (10.20.30.40)' can't be established.
ECDSA key fingerprint is 31:22:0e:5a:20:cc:20:2e:20:2d:20:a6:7b:86:ed:e3.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '10.20.30.40' (ECDSA) to the list of known hosts.
root@10.20.30.40's password:
Permission denied, please try again.
root@10.20.30.40's password:
Permission denied, please try again.
root@10.20.30.40's password:
Permission denied (publickey,password).