Reverse Proxy requiring use_x_forwarded_for

As I understand it, use_x_forwarded_for is now required for reverse proxy to work.

Only connections from the IP’s listed in the ‘trusted proxies’ option will have access to HA. What happens if my proxy IP changes and my HA instance is shutdown? I’m using hassio; I know I can change the IP-related info in HASSIO, but what about making the appropriate changes in my HA OS UI… How would I access it?

  use_x_forwarded_for: true
  trusted_proxies:
    - 10.0.0.200      # Add the IP address of the proxy server
    - 172.30.33.0/24  # You may also provide the subnet mask

When I attempt to add these required options, I received the below errors…
Inkeduse_x_forward_for_

Resolved in Discord Chat community… I needed to uncomment out the http: section to enter those options.

Discord post