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"Reliability" in this case is ensuring that the packet (singular) gets to the user. If it doesn't, the user simply re-requests it. (For when the response would
by beaumartinez 16y ago
"Reliability" in this case is ensuring that the packet (singular) gets to the user. If it doesn't, the user simply re-requests it.
(For when the response would be more than one UDP packet, "reliability" would also include receiving the packets in order. In that case DNS would tell the user to do the request over TCP.)