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Re: [tor-relays] Please need urgent help with the DNS resolver of a fast exit relay

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Subject: Re: [tor-relays] Please need urgent help with the DNS resolver of a fast exit relay
From: Linus Nordberg <linus@xxxxxxxxxxx>
Date: Fri, 25 Apr 2014 14:26:40 +0200
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In-reply-to: <535939D5.700@xxxxxxxxxx> (s7r@xxxxxxxxxx's message of "Thu, 24 Apr 2014 19:20:37 +0300")
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"s7r@xxxxxxxxxx" <s7r@xxxxxxxxxx> wrote
Thu, 24 Apr 2014 19:20:37 +0300:

| I get this in the log very often:
| Apr 24 15:14:07.000 [notice] Circuit handshake stats since last time:
| 91633/91636 TAP, 15962/15962 NTor.
| Apr 24 17:40:45.000 [warn] eventdns: All nameservers have failed
| Apr 24 17:40:45.000 [notice] eventdns: Nameserver <ip>:53 is back up
| 
| Both nameservers fail and come back after 1 second, or less.

Are you running this relay on a BSD system, perchance?

I see this on lots of relays on FreeBSD and think that it's related to
libevent on certain platforms. I also think that it's benign.
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