[tor-relays] Logs full of "eventdns: All nameservers have failed"

[Klaus Layer]

Andy Isaacson <adi at hexapodia.org> wrote on 03.12.2011:
> Since DNS is the most frequent UDP traffic you'll see on a Tor node,
> perhaps this is simply a symptom of high packet loss on your NIC.
It's a gigabit link, with at the moment only 30% load. I don't expect 
significant packet loss.

> You could consider running a caching nameserver on localhost.  That
> could have negative side effects, though; you're increasing memory and
> CPU load by doing so, and potentially increasing attack surface
> depending on your exact configuration.
I am already running caching DNS. CPU is not an issue, but its eating up some 
memory.

Well, as these messages seems to be quite common I will just ignore them.

Thanks,

Klaus
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