Circuit TCP-0-2, Adjacent node = 19.41 (SG1) SG1 is the only node flapping, so I assume the problem is closer to SG1 than STUPI? $ multinet traceroute 69.21.253.158 traceroute to 69.21.253.158 (69.21.253.158), 30 hops max, 38 byte packets 1 192.108.200.210 (192.108.200.210) 10 ms 10 ms 10 ms 2 194.71.10.95 (194.71.10.95) 10 ms 10 ms 10 ms 3 kst5-core-1.tengige0-2-0-2.tele2.net (130.244.64.100) 10 ms 10 ms 10 ms 4 bck-core-1.bundle-ether4.tele2.net (130.244.39.141) 10 ms 20 ms 20 ms 5 gbg-core-2.bundle-ether2.tele2.net (130.244.39.52) 20 ms 20 ms 20 ms 6 gbg-core-2.bundle-ether5.tele2.net (130.244.49.166) 30 ms 20 ms 20 ms 7 ams-core-1.bundle-pos1.tele2.net (130.244.205.150) 30 ms 30 ms 40 ms 8 nyc9-core-1.pos8-0-0.tele2.net (130.244.218.214) 110 ms 110 ms 110 ms 9 nyc9-peer-1.xe-1-2-0-unit0.tele2.net (130.244.64.138) 110 ms 110 ms 110 m s 10 198.32.118.31 (198.32.118.31) 100 ms 110 ms 110 ms 11 69.21.253.154 (69.21.253.154) 160 ms 140 ms 150 ms 12 * * *