watchNS/xw.qmail.jp/c.ns.xw.qmail.jp/log2について、ここに記述してください。
1. dig c.ns.xw.qmail.jp (unbound)
qmail.jp NSに送られてきたqueryのlog (おかしなqueryも混じっている。）
2015-12-11 22:22:03.586395500 276e8703:9cf3:6c99 + 0002 Xw.QMAiL.JP 2015-12-11 22:22:03.593126500 276e8703:cc2f:5fc2 + 0002 NS.qMAIl.jp 2015-12-11 22:22:03.593531500 276e8703:45e7:4dd3 + 0002 QMAIl.jp 2015-12-11 22:22:03.599318500 276e8703:7a32:30e3 + 0002 xW.QmAIl.jp 2015-12-11 22:22:03.606147500 276e8703:fba0:4e10 + 0002 a.NS.qMaiL.Jp 2015-12-11 22:22:03.619586500 276e8703:4c4a:5a69 + 0001 A.Ns.qmaiL.jp
xw.qmail.jp NS に送られてきたquery log
- 用心している部分とそうでない部分とがあって、ちぐはぐ。
2015-12-11 22:22:03.606659500 276e8703:5f3d:580e + 0002 nS.Xw.qMAIL.Jp 2015-12-11 22:22:03.612562500 276e8703:4d57:3055 + 0002 xw.qmail.jP 2015-12-11 22:22:03.619493500 276e8703:e146:4aef + 0001 B.NS.XW.qmaIl.jp 2015-12-11 22:22:03.619494500 276e8703:3258:ae34 + 0001 C.ns.Xw.qMail.jp
どうも unbound.log がおかしいようです。（本当にminimisationと呼べるかどうは別ですが）
[1449840123] unbound[1144:0] info: resolving c.ns.xw.qmail.jp. A IN [1449840123] unbound[1144:0] info: response for c.ns.xw.qmail.jp. A IN [1449840123] unbound[1144:0] info: reply from <jp.> 210.138.175.244#53 [1449840123] unbound[1144:0] info: query response was REFERRAL [1449840123] unbound[1144:0] info: resolving qmail.jp. NS IN [1449840123] unbound[1144:0] info: response for qmail.jp. NS IN [1449840123] unbound[1144:0] info: reply from <jp.> 210.138.175.244#53 [1449840123] unbound[1144:0] info: query response was REFERRAL [1449840123] unbound[1144:0] info: resolving a.ns.qmail.jp. A IN [1449840123] unbound[1144:0] info: response for c.ns.xw.qmail.jp. A IN [1449840123] unbound[1144:0] info: reply from <qmail.jp.> 14.192.44.5#53 [1449840123] unbound[1144:0] info: query response was REFERRAL [1449840123] unbound[1144:0] info: resolving xw.qmail.jp. NS IN [1449840123] unbound[1144:0] info: response for qmail.jp. NS IN [1449840123] unbound[1144:0] info: reply from <qmail.jp.> 14.192.44.5#53 [1449840123] unbound[1144:0] info: query response was ANSWER [1449840123] unbound[1144:0] info: response for a.ns.qmail.jp. A IN [1449840123] unbound[1144:0] info: reply from <qmail.jp.> 14.192.44.5#53 [1449840123] unbound[1144:0] info: query response was nodata ANSWER [1449840123] unbound[1144:0] info: response for xw.qmail.jp. NS IN [1449840123] unbound[1144:0] info: reply from <qmail.jp.> 14.192.44.5#53 [1449840123] unbound[1144:0] info: query response was REFERRAL [1449840123] unbound[1144:0] info: resolving b.ns.xw.qmail.jp. A IN [1449840123] unbound[1144:0] info: response for a.ns.qmail.jp. A IN [1449840123] unbound[1144:0] info: reply from <qmail.jp.> 14.192.44.5#53 [1449840123] unbound[1144:0] info: query response was nodata ANSWER [1449840123] unbound[1144:0] info: response for b.ns.xw.qmail.jp. A IN [1449840123] unbound[1144:0] info: reply from <xw.qmail.jp.> 14.192.44.29#53 [1449840123] unbound[1144:0] info: query response was NXDOMAIN ANSWER [1449840123] unbound[1144:0] info: response for c.ns.xw.qmail.jp. A IN [1449840123] unbound[1144:0] info: reply from <xw.qmail.jp.> 14.192.44.29#53 [1449840123] unbound[1144:0] info: query response was NXDOMAIN ANSWER [1449840123] unbound[1144:0] info: response for xw.qmail.jp. NS IN [1449840123] unbound[1144:0] info: reply from <xw.qmail.jp.> 14.192.44.29#53 [1449840123] unbound[1144:0] info: query response was ANSWER [1449840123] unbound[1144:0] info: response for b.ns.xw.qmail.jp. A IN [1449840123] unbound[1144:0] info: reply from <xw.qmail.jp.> 14.192.44.29#53 [1449840123] unbound[1144:0] info: query response was ANSWER [1449840123] unbound[1144:0] info: response for a.ns.qmail.jp. A IN [1449840123] unbound[1144:0] info: reply from <qmail.jp.> 14.192.44.5#53 [1449840123] unbound[1144:0] info: query response was ANSWER [1449840123] unbound[1144:0] info: response for c.ns.xw.qmail.jp. A IN [1449840123] unbound[1144:0] info: reply from <xw.qmail.jp.> 14.192.44.29#53 [1449840123] unbound[1144:0] info: query response was NXDOMAIN ANSWER