Missing info: What miner? Avalons?
I ask because the Avalons use OpenWRT which is a <drumroll> router. Bet enabling WiFi also made it an access point router.
Problem go away if hard wired and WiFi is off?
Avalon 741s. But they are hard wired to the router already. Somehow the other devices are seeing the miner IP address as the router they are connecting to.
I should also mentioned it's been working fine in this configuration for about a month. Then, Saturday morning, everything just stopped talking to the router and started trying to talk to the miners.