Devices stuck "down"

[derekoharrow]

I've had NetAlertx setup for some time and mostly it works fine.

I've got 7 devices that are showing as "Down", but they aren't. Seems like they've been like that since mid/late December. How can I get them showing as online once again?

I can ping them from the Netalertx container, so they are visible/responding.

Ta

[jokob-sk]

Hi, Not sure why the behaviour changed. It could be due to some software update on the devices. You can try enabling complementary plugins such as NmapDev or ICMP (you can limit the IPs to Ping to speed it up).

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On Mon, 10 Feb 2025, 02:41 derekoharrow, ***@***.***> wrote: I've had NetAlertx setup for some time and mostly it works fine. I've got 7 devices that are showing as "Down", but they aren't. Seems like they've been like that since mid/late December. How can I get them showing as online once again? I can ping them from the Netalertx container, so they are visible/responding. Ta — Reply to this email directly, view it on GitHub <#990>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AW5URDCQEEUS5WKVZUISLFT2O5ZJRAVCNFSM6AAAAABWY6HAKWVHI2DSMVQWIX3LMV43ERDJONRXK43TNFXW4OZXHEZTIOJUGY> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[derekoharrow]

I think I've found the issue - documenting here for others who may experience the same.
Sometime around Christmas, my docker host had an issue with ARP so I had to re-created the VM NIC with a new MAC address. This gave the docker host a new NIC name of ens18. As netalertx was using docker host mode networking, this also resulted in a change of the NIC for Netalertx. I've now changed the SCAN_SUBNETS parameter to the correct NIC name, so hopefully it'll now work.