Debian Bug report logs - #498429
ping to multicast yields DUP! replies

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Package: iputils-ping; Maintainer for iputils-ping is Noah Meyerhans <noahm@debian.org>; Source for iputils-ping is src:iputils.

Reported by: martin f krafft <madduck@debian.org>

Date: Tue, 9 Sep 2008 22:45:01 UTC

Severity: normal

Tags: ipv6, jessie, sid, squeeze, wheezy

Merged with 696310

Found in versions iputils/3:20101006-1, iputils/3:20071127-1

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Report forwarded to debian-bugs-dist@lists.debian.org, Noah Meyerhans <noahm@debian.org>:
Bug#498429; Package iputils-ping. Full text and rfc822 format available.

Acknowledgement sent to martin f krafft <madduck@debian.org>:
New Bug report received and forwarded. Copy sent to Noah Meyerhans <noahm@debian.org>. Full text and rfc822 format available.

Message #5 received at submit@bugs.debian.org (full text, mbox):

From: martin f krafft <madduck@debian.org>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: ping to multicast yields DUP! replies
Date: Tue, 9 Sep 2008 23:42:10 +0100
[Message part 1 (text/plain, inline)]
Package: iputils-ping
Version: 3:20071127-1
Severity: minor
File: /bin/ping6
Tags: ipv6

PING ff02::1(ff02::1) from fe80::211:2fff:fe6b:c869 lan: 56 data bytes
64 bytes from fe80::211:2fff:fe6b:c869: icmp_seq=1 ttl=64 time=0.036 ms
64 bytes from fe80::200:cbff:fe02:2e7b: icmp_seq=1 ttl=64 time=0.323 ms (DUP!)

The manpage suggests that

  Duplicate packets should never  occur,  and seem to be caused by
  inappropriate link-level retransmissions.

but in this case, the behaviour is expected and proper, since
a multicast address is being pinged. ping6 should probably hide the
DUP! warning in that case.

-- System Information:
Debian Release: lenny/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (1, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 2.6.24-etchnhalf.1+scoflowctrl.1-686 (SMP w/1 CPU core)
Locale: LANG=en_GB, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages iputils-ping depends on:
ii  libc6                         2.7-13     GNU C Library: Shared libraries

iputils-ping recommends no packages.

iputils-ping suggests no packages.

-- no debconf information


-- 
 .''`.   martin f. krafft <madduck@debian.org>
: :'  :  proud Debian developer, author, administrator, and user
`. `'`   http://people.debian.org/~madduck - http://debiansystem.info
  `-  Debian - when you have better things to do than fixing systems
[digital_signature_gpg.asc (application/pgp-signature, inline)]

Severity set to 'serious' from 'minor' Request was from Clint Adams <schizo@debian.org> to control@bugs.debian.org. (Tue, 23 Mar 2010 01:03:38 GMT) Full text and rfc822 format available.

Added tag(s) sid and squeeze. Request was from Gerfried Fuchs <rhonda@debian.at> to control@bugs.debian.org. (Tue, 23 Mar 2010 07:51:31 GMT) Full text and rfc822 format available.

Severity set to 'minor' from 'serious' Request was from Gerfried Fuchs <rhonda@deb.at> to control@bugs.debian.org. (Tue, 23 Mar 2010 08:30:40 GMT) Full text and rfc822 format available.

Added tag(s) wheezy. Request was from Kurt Roeckx <kurt@roeckx.be> to control@bugs.debian.org. (Wed, 16 Feb 2011 19:03:17 GMT) Full text and rfc822 format available.

Added tag(s) jessie. Request was from Julien Cristau <jcristau@debian.org> to control@bugs.debian.org. (Thu, 18 Apr 2013 17:44:34 GMT) Full text and rfc822 format available.

Severity set to 'normal' from 'minor' Request was from Noah Meyerhans <noahm@debian.org> to control@bugs.debian.org. (Sat, 01 Feb 2014 16:51:23 GMT) Full text and rfc822 format available.

Marked as found in versions iputils/3:20101006-1. Request was from Noah Meyerhans <noahm@debian.org> to control@bugs.debian.org. (Sat, 01 Feb 2014 16:51:24 GMT) Full text and rfc822 format available.

Merged 498429 696310 Request was from Noah Meyerhans <noahm@debian.org> to control@bugs.debian.org. (Sat, 01 Feb 2014 16:51:25 GMT) Full text and rfc822 format available.

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