router: update system routes for linux

router/router_linux.go

@@ -0,0 +1,23 @@
+package router
+
+import (
+	"fmt"
+
+	"github.com/go-gost/core/router"
+	"github.com/vishvananda/netlink"
+)
+
+func (p *localRouter) setSysRoutes(routes ...*router.Route) error {
+	for _, route := range routes {
+		p.options.logger.Debugf("ip route replace %s via %s", route.Net, route.Gateway)
+		r := netlink.Route{
+			Dst: route.Net,
+			Gw:  route.Gateway,
+		}
+		if err := netlink.RouteReplace(&r); err != nil {
+			return fmt.Errorf("set route %v %v: %v", r.Dst, r.Gw, err)
+		}
+
+	}
+	return nil
+}