Public bug reported:
Binary package hint: mtr
While using Jaunty/mtr-tiny and mtr version 0.75-2 I noticed a problem.
If the only recursive nameservers (the nameserver setting in
/etc/resolv.conf) that are available are IPv6, the dns resolution in the
ncurses ui fails.
In the --report mode it works.
I installed the mtr package and the same happend.
My guess is, when it's using --report it will use the system library
which works with IPv4 and IPv6 nameserver settings.
In the case of the ncurses or grafical ui, mtr(-tiny) tries to do it
itself with a non-blocking method and only seems to understand IPv4
nameservers.
I looked at some sourcecode, at first glance it seems to add only IPv4
address to the list of recursive nameservers in dns_open.
That could be the place were it goes wrong. I tried to change what
seemed wrong at first glance, but that didn't help.
I subscribed to the mtr-mailinglist at the upstream-source (bitwizard I
think it was) but their was no subscribe-confirmation so I assumed it
failed. As I'm on Ubuntu using a Ubuntu package, I'm reporting it here,
not Debian directly.
Hope this helps.
** Affects: mtr (Ubuntu)
Importance: Undecided
Status: New
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dns resolution fails in UI with only IPv6-recursive nameservers
https://bugs.launchpad.net/bugs/437586
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