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My rigs kept mining, everything looked good, until I rebooted my wireless, then every one 'could not resolve host name"
Wondering if yours continue to mine, and if they really are mining?
A miner wont do a DNS lookup to change an active connection, since stratum is a permanent connection.
When the connection is lost or the miner is restarted or rebooted, it may then do a DNS lookup that could be mangled by the problem.