Your message dated Tue, 13 Jul 2010 21:13:46 +0200
with message-id <[email protected]>
and subject line Re: traceroute -T doesn't work as well as tcptraceroute
has caused the Debian Bug report #436804,
regarding traceroute -T doesn't work as well as tcptraceroute
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
436804: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=436804
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: traceroute
Version: 2.0.7-2
Severity: normal
Now that tcptraceroute is obsoleted, I tried the new version and got:
p...@chianamo:~$ tcptraceroute google.com
The specified type of tracerouting is allowed for superuser only
Then I tried it as root and got this:
r...@chianamo:~# tcptraceroute google.com
traceroute to google.com (64.233.167.99), 30 hops max, 40 byte packets
1 192.168.4.1 (192.168.4.1) 0.606 ms 0.576 ms *
2 * * *
3 * * *
4 * * *
5 * * *
6 * py-in-f99.google.com (64.233.167.99) 57.581 ms 58.833 ms
In comparison, the tcptraceroute from the tcptraceroute package gives:
p...@chianamo:~$ tcptraceroute google.com
Selected device eth0, address 192.168.4.174, port 48799 for outgoing packets
Tracing the path to google.com (72.14.207.99) on TCP port 80 (www), 30 hops max
1 192.168.4.1 0.492 ms 0.248 ms 0.181 ms
2 10.20.20.218 32.597 ms 30.842 ms 28.742 ms
3 syd-nxg-ibo-cup-1-vlan-1.tpgi.com.au (220.245.178.219) 27.982 ms 27.968
ms 28.900 ms
4 eh-in-f99.google.com (72.14.207.99) [open] 30.803 ms 31.981 ms 32.642 ms
Clearly, the tcptraceroute in traceroute is less useful, please remove
it and remove the conflicts/replaces.
-- System Information:
Debian Release: lenny/sid
APT prefers unstable
APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)
Kernel: Linux 2.6.22-1-686 (SMP w/2 CPU cores)
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages traceroute depends on:
ii libc6 2.6.1-1 GNU C Library: Shared libraries
--
bye,
pabs
http://wiki.debian.org/PaulWise
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--- End Message ---
--- Begin Message ---
Hi,
quoting upstream from
http://sourceforge.net/mailarchive/message.php?msg_name=4C3C5523.5070504%40odu.neva.ru:
---snip---
It is known issue, inspired by the "spray mode", which is used by
default in the new traceroute to send several probes simultaneously.
The problem is sometimes some routers (in the path) filter icmp
responses when they go "too fast". It is mentioned in the manual.
Another yet not discovered issue is that in an environment with Linux
routers (?), the first attempt to run traceroute (with default "spray"
mode) results in a lot of "*" -- ie. lost replies, but the second and
all consecutive calls works fine. It seems that a router has not time to
cock a routing session, and the icmp package "expired" due to this, but
for the second time "a routing session" is already present.
[...]
To quick fix the issue, or to cause "traceroute -T" work most closely to
the original tcptraceroute, just use '-N 1" flag. This flag causes
traceroute to send one probe per time. It provides highest stability by
the cost of more time.
IOW, there are environments when the default "-N 15" is not a good
choice, at least for the first invocation. But it seems (according to
the missing massive bug reports about it last years) that it is not too
wide-spread case...
User can do 'alias traceroute="traceroute -N 1" ' for his shell, if his
environment is affected.
---snap---
Regards,
Daniel
--
Address: Daniel Baumann, Burgunderstrasse 3, CH-4562 Biberist
Email: [email protected]
Internet: http://people.panthera-systems.net/~daniel-baumann/
--- End Message ---
