Two wireguard routes to one network

[Kornelius777]

Dear all,

I have two local networks connected to each other via two different wireguard connections.

What I would like to know:
How can I establish a route metric/route cost, so that one of the two connections only works as a kind of a fallback?
Without a metric, the possibility to crate a routing loop is quite high.

Could somebody please give me a hand?

Kind regards,