CheckHostIP yes
# Ask before adding any host keys to ~/.ssh/known_hosts (default).
StrictHostKeyChecking ask
-# Don't trust host keys from DNS' SSHFP resource records (default).
- VerifyHostKeyDNS no
+# Check host keys from DNS' SSHFP resource records but ask apply
+# StrictHostKeyChecking before trusting them.
+ VerifyHostKeyDNS ask