Selectively Route OpenVPN Traffic on OpenWRT with PassWall2

This guide shows how to combine OpenVPN with PassWall2 and Sing-Box on OpenWRT to route only specific traffic through the VPN. By adding route-nopull and pull-filter directives, the VPN connects without hijacking the entire network. The setup creates a flexible proxy node for smart routing, local SOCKS proxy, or multi-VPN configurations.