I am attempting to load-balance DNS resolution requests.
Suppose, in Linux, you have a /etc/resolv.conf with this contents:
nameserver aaa.bbb.ccc.ddd
nameserver eee.fff.000.111
nameserver 222.333.444.555
How does a Tor exit node use these 3 nameservers?
Are they used in a round-robin fashion with the next name resolution request
being handled by the next nameserver in rotation?
Is the first nameserver ("aaa.bbb.ccc.ddd" above) always used first, with the
second being used if the first exceeds some time-out threshold, and the third
used only if the first 2 fail?
Does a middle node use name resolution at all, or is the relaying based purely
on IP addresses?
Thanks.
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