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

Andy Isaacson <adi@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