KDDI/kddi.ne.jp/int-gw/unbound.log2について、ここに記述してください。
int-gw.kddi.ne.jp NS がexpireしたあと：
[1451464296] unbound[1106:0] info: resolving int-gw.kddi.ne.jp. NS IN [1451464296] unbound[1106:0] info: response for int-gw.kddi.ne.jp. NS IN [1451464296] unbound[1106:0] info: reply from <kddi.ne.jp.> 54.64.39.199#53 [1451464296] unbound[1106:0] info: query response was REFERRAL [1451464296] unbound[1106:0] info: resolving dolphin.kddnet.ad.jp. A IN [1451464296] unbound[1106:0] info: response for dolphin.kddnet.ad.jp. A IN [1451464296] unbound[1106:0] info: reply from <jp.> 203.119.1.1#53 [1451464296] unbound[1106:0] info: query response was REFERRAL [1451464296] unbound[1106:0] info: resolving kddnet.ad.jp. NS IN [1451464296] unbound[1106:0] info: response for kddnet.ad.jp. NS IN [1451464296] unbound[1106:0] info: reply from <jp.> 203.119.40.1#53 [1451464296] unbound[1106:0] info: query response was REFERRAL [1451464296] unbound[1106:0] info: resolving dolphin.kddnet.ad.jp. A IN [1451464296] unbound[1106:0] info: resolving penguin.kddnet.ad.jp. A IN [1451464296] unbound[1106:0] info: response for dolphin.kddnet.ad.jp. A IN [1451464296] unbound[1106:0] info: reply from <kddnet.ad.jp.> 210.132.91.130#53 [1451464296] unbound[1106:0] info: query response was nodata ANSWER [1451464296] unbound[1106:0] info: response for kddnet.ad.jp. NS IN [1451464296] unbound[1106:0] info: reply from <kddnet.ad.jp.> 210.132.91.130#53 [1451464296] unbound[1106:0] info: query response was ANSWER [1451464296] unbound[1106:0] info: response for dolphin.kddnet.ad.jp. A IN [1451464296] unbound[1106:0] info: reply from <kddnet.ad.jp.> 210.132.91.129#53 [1451464296] unbound[1106:0] info: query response was nodata ANSWER [1451464296] unbound[1106:0] info: response for penguin.kddnet.ad.jp. A IN [1451464296] unbound[1106:0] info: reply from <kddnet.ad.jp.> 210.132.91.130#53 [1451464296] unbound[1106:0] info: query response was nodata ANSWER [1451464296] unbound[1106:0] info: response for dolphin.kddnet.ad.jp. A IN [1451464296] unbound[1106:0] info: reply from <kddnet.ad.jp.> 210.132.91.129#53 [1451464296] unbound[1106:0] info: query response was ANSWER [1451464296] unbound[1106:0] info: response for dolphin.kddnet.ad.jp. A IN [1451464296] unbound[1106:0] info: reply from <kddnet.ad.jp.> 210.132.91.130#53 [1451464296] unbound[1106:0] info: query response was ANSWER [1451464296] unbound[1106:0] info: response for penguin.kddnet.ad.jp. A IN [1451464296] unbound[1106:0] info: reply from <kddnet.ad.jp.> 210.132.91.130#53 [1451464296] unbound[1106:0] info: query response was ANSWER [1451464296] unbound[1106:0] info: response for int-gw.kddi.ne.jp. NS IN [1451464296] unbound[1106:0] info: reply from <int-gw.kddi.ne.jp.> 210.132.91.130#53 [1451464296] unbound[1106:0] info: query response was ANSWER [1451464333] unbound[1106:0] info: resolving tegami1.int-gw.kddi.ne.jp. A IN [1451464333] unbound[1106:0] info: response for tegami1.int-gw.kddi.ne.jp. A IN [1451464333] unbound[1106:0] info: reply from <int-gw.kddi.ne.jp.> 210.132.91.138#53 [1451464333] unbound[1106:0] info: query response was nodata ANSWER [1451464333] unbound[1106:0] info: response for tegami1.int-gw.kddi.ne.jp. A IN [1451464333] unbound[1106:0] info: reply from <int-gw.kddi.ne.jp.> 106.187.5.93#53 [1451464333] unbound[1106:0] info: query response was ANSWER