@IceKohl This is way off topic.
I'm not a network expert by any means, it's just that when using Linux and BSD one often has to write the subnet mask in various forms. Here's a simple calculator for specifying a network, http://jodies.de/ipcalc?host=192.168.0.1&mask1=18&mask2=
For instance, a /24 provides 254 hosts, a /16 gives 65534 hosts and a /8 a whole 16777214 hosts.
More uncommon values are /30 which only allow 2 ips.
Back on topic,
The best guess is that the miner in question is operating on a different subnet mask and can't find the router or dns. Changing the ip configuration of the miner would allow to specify the ip range of the miner, and direct it to the router/gateway on the network.
In order to connect to the miner initially, one would need to change the ip-settings of another computer to be able to connect to the miner, eg change the ip settings from 192.168.0.50 to 192.168.1.50, if we believe the miner is currently on the 192.168.1.X subnet.Please note the value of the second last numbers, they changed from 0 to 1.
If successfully connected to the miners gui settings, look around and change the ip to 192.168.0.50 or something, see if it picks up the change and can connect, otherwise restart the miner and you should be good to go. last step is to change back the ip settings of the computer and that's all there is to it
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