Private IPs in Public routing
Sometimes we see interesting IP’s in traceroute & they confuse lot of people.
I have seen this topic in discussion twice on NANOG and once on Linux Delhi user group.
OK - let’s pick an example:
anurag:~ anurag$ traceroute 71.89.140.11 traceroute to 71.89.140.11 (71.89.140.11), 64 hops max, 52 byte packets 1 router (10.10.0.1) 1.176 ms 0.993 ms 0.941 ms 2 117.220.160.1 (117.220.160.1) 20.626 ms 29.101 ms 19.216 ms 3 218.248.169.122 (218.248.169.122) 23.983 ms 43.850 ms 45.057 ms 4 115.114.89.21.static-mumbai.vsnl.net.in (115.114.89.21) 118.094 ms 81.447 ms 66.838 ms 5 172.31.16.193 (172.31.16.193) 115.979 ms 90.947 ms 90.491 ms 6 ix-4-2.tcore1.cxr-chennai.as6453.net (180.87.36.9) 95.778 ms 98.601 ms 98.920 ms 7 if-5-2.tcore1.svw-singapore.as6453.net (180.87.12.53) 321.174 ms if-3-3.tcore2.cxr-chennai.as6453.net (180.87.36.6) 331.386 ms 326.671 ms 8 if-6-2.tcore2.svw-singapore.as6453.net (180.87.37.14) 317.442 ms if-2-2.tcore2.svw-singapore.as6453.net (180.87.12.2) 334.647 ms 339.289 ms 9 if-7-2.tcore2.lvw-losangeles.as6453.net (180.87.15.26) 318.003 ms 328.334 ms 309.234 ms 10 if-2-2.tcore1.lvw-losangeles.as6453.net (66.110.59.1) 306.500 ms 326.194 ms 341.537 ms 11 66.110.59.66 (66.110.59.66) 315.431 ms 330.417 ms 308.372 ms 12 dls-bb1-link.telia.net (213.155.136.40) 354.768 ms 344.360 ms 357.050 ms 13 chi-bb1-link.telia.net (80.91.248.208) 352.479 ms 358.751 ms 359.987 ms 14 cco-ic-156108-chi-bb1.c.telia.net (213.248.89.46) 367.467 ms 370.482 ms 377.280 ms 15 bbr01aldlmi-bue-4.aldl.mi.charter.com (96.34.0.98) 387.269 ms 385.362 ms 365.694 ms 16 crr02aldlmi-bue-2.aldl.mi.charter.com (96.34.2.11) 375.275 ms 375.356 ms 371.621 ms 17 dtr02grhvmi-tge-0-1-0-0.grhv.mi.charter.com (96.34.34.83) 383.539 ms 371.817 ms 383.804 ms 18 dtr02whthmi-tge-0-1-0-0.whth.mi.charter.com (96.34.34.85) 384.400 ms 391.197 ms 393.340 ms 19 dtr02ldngmi-tge-0-1-0-0.ldng.mi.charter.com (96.34.34.87) 371.192 ms 375.679 ms 378.457 ms 20 acr01mnplmi-tge-0-0-0-3.mnpl.mi.charter.com (96.34.40.75) 364.824 ms 385.534 ms 374.401 ms 21 * *^C anurag:~ anurag$
Do connected interface ping?
And an interesting day full of bit frustrating drama. Today was “External viva” for Major Project at college. It went good with external teacher but “internal ones” tend to cause un-necessary issues. Quite a few people put personal egos and frustration on top priority to an extent that they violate their own points for which they are arguing. They go completely unethical in way they deal with world.