Antminer IP dead

[Chief J]

One of my antminers has been working just fine, recently it started appearing as inactive on antpool. The normal green light on the machine still flashes, but the IP seems to be dead since i cant access the settings if the antminer. When i run the ip scanner it finds the IP address of the antminer but shows it as dead, even though the ethernet on both ends has a green light as well (  have 18 other running just fine, so its not an internet problem) anybody know what this problem might be? have in mind i cant access the settings so icant really look at the kernel log or the hash rate.

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[Chief J]

One of my antminers has been working just fine, recently it started appearing as inactive on antpool. The normal green light on the machine still flashes, but the IP seems to be dead since i cant access the settings if the antminer. When i run the ip scanner it finds the IP address of the antminer but shows it as dead, even though the ethernet on both ends has a green light as well (  have 18 other running just fine, so its not an internet problem) anybody know what this problem might be? have in mind i cant access the settings so icant really look at the kernel log or the hash rate.

Can someone "steal" the ip address of my miner and use it mine themselves?

[alh]

One possible approach to debug this would be take the miner in question off the network and set up an isolated network that you can put it on. What I mean by that would be to have a separate router that isn't actually connected to the real Internet (and Wifi disabled). Power off the miner, disconnect it, and reconnect to the isolated router. power it on and let it reboot. Connect a PC or laptop to the isolated router using a cable as well. Once you are setup, you can then poke at and see how it shows up and if you can log into it. Yes it won't actually be hashing for you. You should be able to then get into and check the settings. This should simplify your efforts to figure out what works and what doesn't. It  should also rule out any possible IP address conflicts.

This approach assumes that your S9 is setup to use DHCP to acquire an IP address on your internal network.

You can also take a 2nd working S9 off and connect it to your isolated network.

Just a couple of ideas for your troubleshooting efforts.

[Chief J]

I didn't mention these are D3s, but does it make a difference?