disable ipv6 source query

[Mark Andrews]

	server ::/0 { bogus yes; };

In message <CAJS9+YbY3VL3kEhtJMt58eKQrF6QazfvT3kHVy05q26LMPTmkg at mail.gmail.com>, Hillary Nelson writes:
> We are moving our v6 DNS from F5 to anycast, since F5 can translate address
> from v6 to v4, our backend servers are still only v4 and we never have
> problem to resolve hostname with v4 only.
> 
> Now for anycast, I want to enable v6 with private address only, but seems
> like named favors v6 and using it to source query other nameserver, it will
> try v4 if v6 fails, like this(I've configured source-query-v6 address  ::1
> so v6 always fails):
> 
> 21:04:33.303536 IP6 ::1.34892 > 2001:dcd:1::7.53: 33940% [1au] A?
> example.com. (48)
> 21:04:34.146521 IP 1.1.1.1.58822 > 2.2.2.2: 55501% [1au] A? example.com.
> (48)
> 
> 
> My question is how to config named to only using v4 address to query other
> nameserver, but still keep an listening v6 address?
> 
> Thanks in advance!!
> Hillary
> 
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org