IP6QB_HEAD
TAILQ_INIT(IP6QB_HEAD(bucket));
while ((q6 = TAILQ_FIRST(IP6QB_HEAD(bucket))) != NULL) {
TAILQ_REMOVE(IP6QB_HEAD(bucket), q6, ip6q_tq);
head = IP6QB_HEAD(bucket);
head = IP6QB_HEAD(bucket);
head = IP6QB_HEAD(bucket);
q6 = TAILQ_LAST(IP6QB_HEAD(bucket), ip6qhead);