When in the same LAN several ssh servers use DHCP, their IP address may change. Every time they have a new address (that is: an address they never had before in that LAN), the following message appears:The authenticity of host '192.168.1.x (192.168.1.x)' can't be established.ECDSA key fingerprint is xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx.Are you sure you want to continue connecting (yes/no)?If I say yes, that fingerprint will be permanently related to that address. But when a different ssh server will be 192.168.1.x, it will have a different fingerprint and a strong warning appears.Both the server(s) and the client run Ubuntu 14.04, with the latest updates. I trust the server because I have physical access to it and even when its address has changed, I know its authenticity.1) Is it possible that the same server periodically changes its key fingerprint?2) Is there a way to suppress the fingerprint check only for local addresses, that is in the range 192.168.1.1-254?
Avoid ssh authenticity test for local addresses
ubuntu;ssh;networking;security;ip