greyskull ~ # tracepath mail.skynet.ie
 1:  192.168.0.100 (192.168.0.100)                          0.201ms pmtu 1500
 1:  192.168.0.1 (192.168.0.1)                            asymm  2   0.459ms 
 2:  no reply
 3:  rd1wh-ge5-0-0-22.vc.shawcable.net (64.59.158.163)      8.718ms 
 4:  rc1wh-ge9-0-0.vc.shawcable.net (66.163.69.109)        11.890ms 
 5:  rc1wt-pos1-0-0.wa.shawcable.net (66.163.76.2)         12.894ms 
 6:  sl-gw12-sea-10-0-0.sprintlink.net (144.224.113.65)    14.447ms 
 7:  sl-bb21-sea-4-0-0.sprintlink.net (144.232.6.123)      13.435ms 
 8:  sl-bb20-tac-6-0.sprintlink.net (144.232.8.61)         19.468ms 
 9:  sl-bb23-tac-11-0.sprintlink.net (144.232.17.174)      31.318ms 
10:  sl-bb22-sj-9-0.sprintlink.net (144.232.20.8)          41.313ms 
11:  sl-bb25-sj-12-0.sprintlink.net (144.232.3.210)       asymm 12  44.058ms 
12:  sl-st21-sj-12-0.sprintlink.net (144.232.9.240)        42.981ms 
13:  so2-0-0-2488M.ar1.SJC2.gblx.net (208.50.13.93)       asymm 19  52.014ms 
14:  so0-0-0-2488M.ar1.DUB1.gblx.net (67.17.66.6)         asymm 16 176.627ms 
15:  HEAnet-2.so-3-0-0.ar1.dub1.gblx.net (208.48.23.54)   asymm 16 175.374ms 
16:  gige3-1-cr1-lim.hea.net (193.1.195.97)               asymm 17 181.941ms 
17:  gige0-3-ar1-lim.hea.net (193.1.196.13)               asymm 18 181.841ms 
18:  ul.lim.client.hea.net (193.1.194.238)                asymm 20 182.522ms 
19:  fgcheckin.ul.ie (193.1.100.3)                        asymm 20 182.405ms 
20:  bishop.skynet.ie (193.1.99.71)                       asymm 21 184.068ms 
21:  bishop.skynet.ie (193.1.99.71)                       184.749ms !H
     Resume: pmtu 1500