$ tracepath mirror.cc.columbia.edu
 1:  10.74.40.220                                          0.222ms pmtu 1500
 1:  10.74.40.1                                            4.587ms 
 1:  10.74.40.1                                            2.974ms 
 2:  10.74.40.1                                           24.800ms pmtu 1350
 2:  no reply
 2:  192.168.17.254                                      1298.539ms 
 3:  172.16.221.252                                      10318.994ms 
 4:  70.42.157.253                                       490.675ms 
 5:  core1.te5-2-bbnet2.wdc002.pnap.net                  772.771ms 
 6:  xe-0-5-0-4.r01.asbnva02.us.bb.gin.ntt.net           133.819ms 
 7:  ae-3.r00.asbnva02.us.bb.gin.ntt.net                 141.104ms 
 8:  te0-6-0-7.ccr22.iad02.atlas.cogentco.com            176.071ms asymm  7 
 9:  te0-3-0-5.ccr22.dca01.atlas.cogentco.com            286.923ms asymm  8 
10:  te0-1-0-3.ccr22.jfk02.atlas.cogentco.com            187.324ms asymm  9 
11:  no reply
12:  38.122.8.210                                        163.070ms asymm 11 
13:  cc-core-1-x-nyser32-gw-1.net.columbia.edu           899.070ms asymm 12 
14:  cc-conc-1-x-cc-core-1.net.columbia.edu              380.205ms asymm 13 
15:  teewurst.cc.columbia.edu                            838.131ms reached
     Resume: pmtu 1350 hops 15 back 51