Best way no rename an interface ?

I usually like to rename my interfaces to names like wan, lan, dmz etc.

I usually do this by adding an entry to /etc/rc.conf such as the following.

ifconfig_vtnet0_name=“wan”

This works find on my digital ocean machine and my interface is correctly renamed, however I lock myself out of the machine because of the custom digital ocean config entries that are appended to the end of the file which set the ip address etc. These entries are commented as “DigitalOcean Dynamic Configuration”.

Is there a preferred way to rename the interfaces that works safely with the dynamic config ?