ＯＣＮ系の経路障害ですがどうもpie.us-demarc.ntt.netあたりでこけて
経路再計算が頻発しているのが原因っぽいですねぇ

11 xe-0-1-0.r21.osakjp01.jp.bb.gin.ntt.net (61.200.80.197) 31.543 ms 39.032 ms 32.281 ms
12 p64-2-3-0.r20.mlpsca01.us.bb.gin.ntt.net (129.250.4.109) 139.726 ms 139.974 ms 138.969 ms
MPLS Label=611346 CoS=6 TTL=1 S=1
13 xe-1-2-0.r21.mlpsca01.us.bb.gin.ntt.net (129.250.3.187) 154.407 ms 154.010 ms 153.694 ms
MPLS Label=213733 CoS=6 TTL=1 S=1
14 p64-1-3-0.r20.snjsca04.us.bb.gin.ntt.net (129.250.3.43) 142.674 ms 140.493 ms 158.360 ms
MPLS Label=670434 CoS=6 TTL=1 S=1
15 ae-0.r21.snjsca04.us.bb.gin.ntt.net (129.250.2.97) 192.401 ms 153.507 ms 156.460 ms
16 te14-0-0.sjc03.atlas.cogentco.com (154.54.10.49) 331.094 ms 158.498 ms 156.644 ms
17 v3491.mpd01.sjc01.atlas.cogentco.com (154.54.6.101) 156.975 ms 170.532 ms 213.304 ms
18 t9-1.mpd02.sfo01.atlas.cogentco.com (154.54.2.125) 167.721 ms 160.601 ms 213.365 ms
19 g3-0-0.core01.sfo01.atlas.cogentco.com (154.54.3.101) 284.620 ms 333.182 ms 159.701 ms
20 g0-1.na22.b003070-0.sfo01.atlas.cogentco.com (38.112.39.130) 182.348 ms 162.153 ms 160.179 ms
21 PacificInternetExchange.demarc.cogentco.com (38.112.11.74) 179.048 ms 158.197 ms 200.332 ms
22 CoreInterLink1.PIE.us (206.223.144.29) 254.426 ms 179.101 ms 186.656 ms
23 banana274.maido3.com (206.223.147.230) 210.863 ms 216.278 ms 332.300 ms