The docs say that you can't queue on an inbound packet. Queuing doesn't make sense inbound anyway; once you've received the packet, it has already consumed your bandwidth, and thus queuing won't change anything.
-- http://www.lightconsulting.com/~travis/ -><- "We already have enough fast, insecure systems." -- Schneier & Ferguson GPG fingerprint: 50A1 15C5 A9DE 23B9 ED98 C93E 38E9 204A 94C2 641B