Switching Problem with OpenVPN Client on Multi-WAN Setup

[kevinschmitt]

Hey guys,

I've set up a Multi-WAN solution for our customer. He has got an OPNSense with two gateways (1x DSL Tier 1, 1x LTE Tier 2), gateway switching is enabled - everything works so far.

On the OPNSense is an OpenVPN client configured, which makes a Site2Site connection to an external OPNSense.
When the DSL link goes down, the OpenVPN client does a short reconnect and establishes the connection over the LTE link - works also as excepted.

I am then expecting, when the DSL link comes back online again, the OpenVPN should reconnect and switch over to the DSL link (Tier 1). Every other services at the OPNsense except the OpenVPN client do this switch over correctly!

OpenVPN is configured to use TCP protocol.

What I am doing wrong?

Thank you!

Kind regards,
Kevin