$ tracepath berkeley.edu
 1:  10.81.40.87                                           0.186ms pmtu 1500
 1:  10.81.40.1                                            4.403ms 
 1:  10.81.40.1                                            4.801ms 
 2:  10.81.40.1                                            7.027ms pmtu 1350
 2:  192.168.20.254                                      1110.463ms 
 2:  192.168.20.254                                      5329.000ms 
 3:  172.16.221.252                                      1345.984ms 
 4:  70.42.157.253                                       186.656ms 
 5:  core1.te5-1-bbnet1.wdc002.pnap.net                  1245.538ms 
 5:  core1.te5-1-bbnet1.wdc002.pnap.net                  872.513ms 
 7:  te0-1-0-6.mpd22.iad02.atlas.cogentco.com            196.512ms 
 8:  te0-3-0-5.mpd22.dca01.atlas.cogentco.com            150.812ms 
 9:  te0-3-0-4.mpd22.ord01.atlas.cogentco.com            185.838ms 
10:  te0-1-0-2.mpd22.mci01.atlas.cogentco.com            230.279ms 
11:  te0-0-0-2.mpd22.sfo01.atlas.cogentco.com            269.378ms 
12:  no reply
13:  calren-cenic.paix.net                               231.892ms asymm 11 
14:  dc-oak-core1--paix-px1-ge.cenic.net                 276.035ms asymm 12 
15:  dc-oak-agg1--oak-core1-10ge.cenic.net               320.988ms asymm 13 
16:  137.164.50.31                                       296.297ms asymm 15 
14:  dc-oak-core1--paix-px1-ge.cenic.net                 7723.626ms asymm 12 
17:  t2-3.inr-202-reccev.Berkeley.EDU                    238.778ms asymm 15 
18:  t1-1.inr-211-srb.Berkeley.EDU                       559.867ms asymm 16 
19:  no reply
20:  no reply
21:  no reply
22:  no reply
23:  no reply
24:  no reply
25:  no reply
26:  no reply
27:  no reply
28:  no reply
29:  no reply
30:  no reply
31:  no reply
     Too many hops: pmtu 1350
     Resume: pmtu 1350