Using OpenVPN with Gateway Groups and Failover

[automate]

Hi Guys,

Ive got an ethernet based WAN service and an LTE backup. I've setup all the failover and it works fine.

Im now deploying OpenVPN.

The IP address on the WAN is static, the LTE is allocated dynamically. To assign a hostname to the LTE interface, I'm using Dynamic DNS on pfsense and this works fine. The DNS name on the WAN interface is different however

How can I ensure OpenVPN allows clients to use EITHER DNS name , when connecting? This is to ensure they can connect irrespective of using the WAN or 4G interface

Thanks!