これでいいのか？？？
; <<>> DiG 9.6.1-P1 <<>> +trace city.nanyo.yamagata.jp soa ;; global options: +cmd . 192934 IN NS E.ROOT-SERVERS.NET. . 192934 IN NS J.ROOT-SERVERS.NET. . 192934 IN NS G.ROOT-SERVERS.NET. . 192934 IN NS B.ROOT-SERVERS.NET. . 192934 IN NS D.ROOT-SERVERS.NET. . 192934 IN NS M.ROOT-SERVERS.NET. . 192934 IN NS A.ROOT-SERVERS.NET. . 192934 IN NS C.ROOT-SERVERS.NET. . 192934 IN NS I.ROOT-SERVERS.NET. . 192934 IN NS K.ROOT-SERVERS.NET. . 192934 IN NS L.ROOT-SERVERS.NET. . 192934 IN NS H.ROOT-SERVERS.NET. . 192934 IN NS F.ROOT-SERVERS.NET. ;; Received 488 bytes from 210.169.169.124#53(210.169.169.124) in 26 ms jp. 172800 IN NS A.DNS.jp. jp. 172800 IN NS B.DNS.jp. jp. 172800 IN NS C.DNS.jp. jp. 172800 IN NS D.DNS.jp. jp. 172800 IN NS E.DNS.jp. jp. 172800 IN NS F.DNS.jp. jp. 172800 IN NS G.DNS.jp. ;; Received 436 bytes from 192.228.79.201#53(B.ROOT-SERVERS.NET) in 117 ms city.nanyo.yamagata.jp. 86400 IN NS nanyo.city.nanyo.yamagata.jp. city.nanyo.yamagata.jp. 86400 IN NS dns2.odn.ne.jp. ;; Received 102 bytes from 204.74.112.245#53(C.DNS.jp) in 119 ms city.nanyo.yamagata.jp. 48642 IN NS nanyo.city.nanyo.yamagata.jp. city.nanyo.yamagata.jp. 48642 IN NS dns2.odn.ne.jp. city.nanyo.yamagata.jp. 48642 IN NS home.ncv-y.co.jp. ;; BAD (HORIZONTAL) REFERRAL ;; Received 162 bytes from 143.90.130.57#53(dns2.odn.ne.jp) in 13 ms city.nanyo.yamagata.jp. 48642 IN NS dns2.odn.ne.jp. city.nanyo.yamagata.jp. 48642 IN NS nanyo.city.nanyo.yamagata.jp. city.nanyo.yamagata.jp. 48642 IN NS home.ncv-y.co.jp. ;; BAD (HORIZONTAL) REFERRAL ;; Received 162 bytes from 143.90.130.57#53(dns2.odn.ne.jp) in 12 ms city.nanyo.yamagata.jp. 48642 IN NS home.ncv-y.co.jp. city.nanyo.yamagata.jp. 48642 IN NS dns2.odn.ne.jp. city.nanyo.yamagata.jp. 48642 IN NS nanyo.city.nanyo.yamagata.jp. ;; BAD (HORIZONTAL) REFERRAL ;; Received 162 bytes from 143.90.130.57#53(dns2.odn.ne.jp) in 12 ms city.nanyo.yamagata.jp. 48642 IN NS dns2.odn.ne.jp. city.nanyo.yamagata.jp. 48642 IN NS nanyo.city.nanyo.yamagata.jp. city.nanyo.yamagata.jp. 48642 IN NS home.ncv-y.co.jp. ;; BAD (HORIZONTAL) REFERRAL ;; Received 162 bytes from 143.90.130.57#53(dns2.odn.ne.jp) in 14 ms city.nanyo.yamagata.jp. 48642 IN NS dns2.odn.ne.jp. city.nanyo.yamagata.jp. 48642 IN NS home.ncv-y.co.jp. city.nanyo.yamagata.jp. 48642 IN NS nanyo.city.nanyo.yamagata.jp. ;; BAD (HORIZONTAL) REFERRAL ;; Received 162 bytes from 143.90.130.57#53(dns2.odn.ne.jp) in 12 ms city.nanyo.yamagata.jp. 86400 IN SOA nanyo.city.nanyo.yamagata.jp. postmaster.city.nanyo.yamagata.jp. 2008020602 28800 14400 604800 86400 city.nanyo.yamagata.jp. 86400 IN NS home.ncv-y.co.jp. city.nanyo.yamagata.jp. 86400 IN NS dns2.odn.ne.jp. city.nanyo.yamagata.jp. 86400 IN NS nanyo.city.nanyo.yamagata.jp. ;; Received 193 bytes from 210.175.81.3#53(home.ncv-y.co.jp) in 23 ms
見事なlameで５回も検索に失敗とか。うーむむむ。
