do not use ip-firewall-mangle action mark route,All routes with routing mark is down after upgrade from 6.6 to 6.7, remove the routing mark will make route establish
solved by firmware upgradeit's a weird, in v5.23 wireless 5GHz band not working very well compare with v5.22, my %GHz WDS network can't connect each other in v5.23,but if i downgrade to 5.22,it's can run seamlessly