dracut using unknown NIC and vlan tagging

Has anyone been able to successfully configure a network using the IP option :off to find a network card that will work with the configuration as well as with a VLAN? It looks like the VLAN option requires vlandid:device. But if you have the IP option looking for a valid device, how do you specify the vlan?

For example:

linux text inst.ks=http://{path_to_kickstart_file} inst.stage2=cdrom ip={host_ip}::{host_gateway}:{netmask}:{hostname}::off vlan=vlan2:{arping_discovered_device} nameserver={nameserver1} nameserver={nameserver2}