Some time ago I noticed many messages in log file about named attempt to resolve strange addresses.
--------------------- Named Begin ------------------------ **Unmatched Entries** network unreachable resolving 'dns-b.iij.ad.jp/A/IN': 2001:240:bb41:8002::1:16#53: 1 Time(s) network unreachable resolving 'dns-b.iij.ad.jp/A/IN': 2001:240:bb4c:8000::1:5#53: 1 Time(s) network unreachable resolving 'nn.uninett.no/A/IN': 2001:500:1::803f:235#53: 1 Time(s) network unreachable resolving 'nn.uninett.no/AAAA/IN': 2001:500:1::803f:235#53: 1 Time(s)
The reason is than since some version named puts IPv6 before IPv4. To get rid of this, you can edit /etc/sysconfig/named and add there a line with additional “-4″ option:
OPTIONS=”-4″
And then just restart named.
