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Author Topic: Possible DNS outage May 5  (Read 10998 times)
npeterson
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« on: Tuesday 04 May 2010, 08:12:22 am »

On May 5 the top level dns servers will be signed with dnssec. This is a good thing for the internet, but may be a bad thing for endian users.

Endian uses dnsmasq to proxy dns requests from internal to external. However it appears dnsmasq does not support edns replys. This means come may 5 dnsmasq may not be able interpret dns requests from the root name servers.

Here is a site that explains the issue and has a test to check compatibility: https://www.dns-oarc.net/oarc/services/replysizetest

My test failed..

Normally i wouldn't worry and just kill dnsmasq, however it appears that endian will not let  dnsmasq die and will auto-restart it. On top of that it appears that even if you have dns transparent proxy and dns anti-malware disabled,  it does not disable the dns hijacking, and filters everything through dnsmasq.

I have opened 2 new endian bug reports:
dnsmasq does not support edns and cannot bypass - http://bugs.endian.it/view.php?id=2888
Cannot disable dnsmasq for direct root server access.  - http://bugs.endian.it/view.php?id=2889

Can anyone else confirm these results?
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wharfratjoe
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« Reply #1 on: Wednesday 05 May 2010, 09:38:17 pm »

How did you perform these tests on endian? dig and nslookup are not included in endian (as far as I can see)

http://fedoraproject.org/wiki/Features/DNSSEC#How_to_Test
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