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



Andy Isaacson <adi@xxxxxxxxxxxxx> wrote on 10.12.2011:
> If it's a decent NIC (Intel or Broadcom) then I'd agree with you.  If
> it's a RTL or other sub-par vendor / driver, then you're overly
> optimistic.
lspci shows:
01:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network 
Connection
02:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network 
Connection

I assume this should be a decent NIC.

> Wait, you're seeing these DNS failures with "nameserver 127.0.0.1" in
> /etc/hosts?  That's more interesting, since then DNS UDP lossage on GigE
> pacet loss is unlikely to be the cause.
> 
> Could you clarify the configuration?  Is Tor doing DNS over the GigE or
> to localhost?
> 
> -andy
Yes I have configure a local caching DNS server. cat /etc/resolve.conf shows
nameserver 127.0.0.1. So I assume TOR resolves via the local configured DNS. I 
verified with nslookup. DNS requests indeed go through the 127.0.0.1:53.

Thanks,

Klaus



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