Redis behind a TCP load-balancer not supported

[solracsf]

If Redi is behind a TCP Load-Balancer, both Nextcloud server and PHP sessions works fine, but not notify_push

1. If IP is Redis server (10.1.0.1) everything works fine
2. If IP is a Load Balancer/Proxy (10.1.0.2->10.1.0.1, tested with both Nginx and HA Proxy), notify_push outputs:

Failed to setup redis subscription: Error while running redis query
WARN [notify_push] src/lib.rs:418: Redis server disconnected, reconnecting in 1s