Set PTR for Linode nodes IPs

[jiehanzheng]

Standalone Linodes have the option to set Reverse DNS (RDNS / PTR record on the IP address).

For LKE: While the underlying Linodes in a LKE cluster is still accessible (and we can set PTR record on the Linodes there), this won't survive a node recycle action.

Would it be possible to declare the desired PTR setting for all nodes in a LKE cluster? This would allow any node to send emails with the correct PTR setting, even if the nodes are recycled.