How to block local VPN traffic that's not through wireguard

[9b9e69c2-4b75-4420]

It's looking like v4.8.x wasn't a 'stable' release for a couple of devices then:

Flint 3 4.8.1 VPN+AdguardHome+NextDNS= IP LEAK

Just tried firmware 4.8.1 2025-08-20, seems that the issue has been completely resolved! Also, average DNS resolution time has returned to be low, I forgot to mention that it was crazy high with previous firmware (70-100ms). [Screenshot 2025-08-26 161528]