Hao Zhang wrote: > I found there are two functions in libaltq/parser.c: cbq_add_filter(), > cbq_delete_filter(). > What's the difference between these two fuctions and cbq_add_filter() and > cbq_delete_filter() in altq/altq_cbq.c. cbq_add_filter() in libaltq calls its counterpart in the kernel via the ioctl systemcall. --Kenjiro