BIND 9.3.1 - How to get rid of AAAA querys?

[Andreas Pettersson]

When looking in the querylog for BIND 9.3.1 running on FreeBSD 5.4, 
almost every other log entry specifies an AAAA query. The only client is 
localhost. I see no reason right now to have BIND wasting resources on 
IPv6 requests, so I added

named_flags="-4"

to rc.conf and restarted named. Sockstat tells me named is listening 
only on udp4 and tcp4, but I still get lots of AAAA entries in the querylog:

12-Sep-2007 21:40:47.129 client 127.0.0.1#60103: query: 
smtp.secureserver.net IN AAAA +
12-Sep-2007 21:40:47.648 client 127.0.0.1#64489: query: 
smtp.where.secureserver.net IN AAAA +
12-Sep-2007 21:40:47.847 client 127.0.0.1#61673: query: 
smtp.secureserver.net IN A +
12-Sep-2007 21:40:47.869 client 127.0.0.1#53040: query: 
mailstore1.secureserver.net IN AAAA +
12-Sep-2007 21:40:47.871 client 127.0.0.1#54473: query: 
mailstore1.secureserver.net IN A +
12-Sep-2007 21:40:58.261 client 127.0.0.1#58124: query: 
120.86.248.87.in-addr.arpa IN PTR +
12-Sep-2007 21:40:58.340 client 127.0.0.1#56511: query: 
static-ip-87-248-86-120.promax.media.pl IN AAAA +
12-Sep-2007 21:40:58.410 client 127.0.0.1#61212: query: 
static-ip-87-248-86-120.promax.media.pl IN A +

What can I do to get rid of these?

-- 
Andreas