The bgpq4 utility is used to generate configurations (prefix-lists, extended access-lists, policy-statement terms and as-path lists) based on IRR data. It's options are as follows: -4 generate IPv4 prefix/access-lists (default). -6 generate IPv6 prefix/access-lists (IPv4 by default). -A try to aggregate prefix-lists as much as possible (not all output formats supported). -a asn specify what asn sh