Public bug reported:
Binary package hint: traceroute
Hello-
traceroute seems to fail to display hops when using the ICMP method
after one of the hops does not have a reverse DNS entry. This works
correctly when using the default UDP method, and when using ICMP method
with "-n" to turn off lookups.
This makes it difficult to use traceroute because you often have to use
ICMP to get around filtering.
This may be the same bug as Bug #269749 from Hardy, but I am seeing it
in the latest Karmic. I have verified this also fails with the newest
traceroute 2.0.13 compiled from source.
Thanks,
John
jo...@ghidorah:~$ lsb_release -rd
Description: Ubuntu 9.10
Release: 9.10
jo...@ghidorah:~$ apt-cache policy traceroute
traceroute:
Installed: 2.0.12-2
Candidate: 2.0.12-2
Version table:
*** 2.0.12-2 0
500 http://us.archive.ubuntu.com karmic/main Packages
100 /var/lib/dpkg/status
# traceroute fails to report hops 2-5 using ICMP with reverse DNS
lookups
jo...@ghidorah:~/traceroute-modern/traceroute-2.0.13$ sudo traceroute -I
4.2.2.2
traceroute to 4.2.2.2 (4.2.2.2), 30 hops max, 60 byte packets
1 192.168.1.1 (192.168.1.1) 2.221 ms 2.239 ms *
2 * * *
3 * * *
4 * * *
5 * * *
6 * asn3356-level3.eqsjca.sbcglobal.net (151.164.251.246) 19.108 ms 20.984
ms
7 vlan69.csw1.SanJose1.Level3.net (4.68.18.62) 24.152 ms 40.095 ms 40.434
ms
8 ge-10-0.core1.SanJose1.Level3.net (4.68.123.6) 32.442 ms 34.574 ms
37.089 ms
9 vnsc-bak.sys.gtei.net (4.2.2.2) 39.194 ms 41.871 ms 45.252 ms
# traceroute works properly using ICMP without reverse DNS lookups
jo...@ghidorah:~/traceroute-modern/traceroute-2.0.13$ sudo traceroute -In
4.2.2.2
traceroute to 4.2.2.2 (4.2.2.2), 30 hops max, 60 byte packets
1 192.168.1.1 1.298 ms 1.978 ms 2.375 ms
2 151.164.184.117 21.038 ms 23.446 ms 25.356 ms
3 76.246.22.1 26.515 ms 28.838 ms 31.758 ms
4 151.164.93.229 34.303 ms 36.386 ms 39.063 ms
5 151.164.171.196 42.262 ms 44.472 ms 47.266 ms
6 151.164.251.246 49.642 ms 51.204 ms 53.569 ms
7 4.68.18.62 66.261 ms 43.156 ms 43.463 ms
8 4.68.123.6 39.454 ms 34.446 ms 37.031 ms
9 4.2.2.2 39.461 ms 35.520 ms 38.248 ms
# traceroute works properly using default UDP with reverse DNS lookups
jo...@ghidorah:~/traceroute-modern/traceroute-2.0.13$ sudo traceroute 4.2.2.2
traceroute to 4.2.2.2 (4.2.2.2), 30 hops max, 60 byte packets
1 192.168.1.1 (192.168.1.1) 1.686 ms 1.706 ms 2.304 ms
2 bras36-l0.pltnca.sbcglobal.net (151.164.184.117) 21.225 ms 23.227 ms
26.398 ms
3 76.246.22.1 (76.246.22.1) 27.080 ms 29.918 ms 32.980 ms
4 151.164.93.229 (151.164.93.229) 34.144 ms 36.584 ms 39.277 ms
5 151.164.171.196 (151.164.171.196) 42.691 ms 45.238 ms 48.004 ms
6 asn3356-level3.eqsjca.sbcglobal.net (151.164.251.246) 49.761 ms 20.078 ms
19.711 ms
7 vlan69.csw1.SanJose1.Level3.net (4.68.18.62) 34.625 ms 34.937 ms
vlan79.csw2.SanJose1.Level3.net (4.68.18.126) 39.587 ms
8 ge-11-0.core1.SanJose1.Level3.net (4.68.123.38) 30.093 ms
ge-10-0.core1.SanJose1.Level3.net (4.68.123.6) 32.805 ms 35.107 ms
9 vnsc-bak.sys.gtei.net (4.2.2.2) 37.811 ms 40.482 ms 42.961 ms
jo...@ghidorah:~/traceroute-modern/traceroute-2.0.13$ sudo traceroute -V
Modern traceroute for Linux, version 2.0.12, Apr 29 2009
Copyright (c) 2008 Dmitry Butskoy, License: GPL v2 or any later
** Affects: traceroute (Ubuntu)
Importance: Undecided
Status: New
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traceroute doesnt display some hops using ICMP method
https://bugs.launchpad.net/bugs/493376
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