round robin DNS?
I knew someone would suggest it,
but a round-robin DNS in some cases returns a list of multiple IP addresses.
This could form an issue, for a miner.
Example:
Let's assume the miner always pick the IP at the top of the list (happens in most cases).
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First DNS-request returns:
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IP1
IP2
IP3
Now if the miner does another DNS request, which might happen each time it asks for work by the server and sends work to the server.
(This is in theory, each miner-software differ from internal structure.)
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Second DNS-request returns:
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IP2
IP3
IP1
Now it could use IP1 to ask for work, and it could send the the work back to IP2 which would make it invalid
-> Ofcourse, it could not be like this, I'll have to see how a miner does it, but it's a theory/assumption.
-> In practice it's easy to solve at the miners side, > simply pass an IP instead of a domain by doing one single DNS-request up-front. But that's not so professional.
-> You might say: well don't make it return a list then but only one single IP, well that would still form an issue.
I'm currently looking into the structure of an existing miner, to see how it handles the target url.
