[ldns-users] pyLDNS Problems

[Paul Wouters]

> Op 03-09-11 00:28, Paul Wouters schreef:
> > I can confirm this problem on centos6. I did not see it on another
> > machine running
> > centos5, though both machines show a VERY long query time for
> > "xelerance.com"
> > against 76.10.157.65, prob due to that machine being an embedded
> > dnsmasq like
> > forwarding proxy (stock openwrt setup)

> HI Paul and Chris, I have setup pyldns 1.6.10 on a virtualbox with
> CentOS 6.0 and unfortunately cannot reproduce the error.
> With me the program answers within 3 to 8 seconds.

Does it work 3 times? The test first checks google.com, then xelerance.com,
then google.com again. The last two fail. This might be related to EDNS and/or
UDP fragments gone missing.

> I'm not really sure how to tackle the issue. Maybe with a ``ltrace -r
> python test-ldns.py''? Or running it in gdb?

Running it with ltrace only gave the following output (apart from the print
output):

   0.000000 __libc_start_main(0x400710, 2, 0x7fff4d48a908, 0x400730, 0x400720 <un
finished ...>
   0.000170 Py_Main(2, 0x7fff4d48a908, 0x7fff4d48a920, 0, 0x7f6cd7384300) = 0
  16.525978 +++ exited (status 0) +++

I could probably clone a VM in that network and give you access to it?

Paul