PBR auto disable if the routing interface disconneted

Feature requests
1

Hi all,
Is that possible to let PBR policy auto disabled if the networking interface disconnected?
I met an issue that is a WG connection disconnected. but the PBR still set the routing go through this WG interface. This make the connection error.

2

How do you check if an interface is disconnected as it is in UP state anyway?
Do you know some iproute2 commands to 100% sure the status is disconnected?
Only WLB uses dynamic rules

3

ping remote ip of the wireguard tunnel ?

4

It does not indicate connection issues.
For example firewall that does not allow ICMP