i've solved the problem. its very similar to bridge behavior i encountered in another installation. I only have vlans defined for my LAGG. once i created another interface that would be untagged on the LAGG, it picked up my native vlan as expected. all of the VIPs for the tagged interfaces started working. so just for my own curiosity i deleted the native interface i crated and rebooted. everything still works. all in all i must have just jiggled the handle