Hello,
I've been reading a few threads I saw in this 'network' sub forum, but I'm not sure my issue is similar. I can't do omv-firstaid (see below) and I'm not sure backports kernel will help since no hardware has changed and it was working fine for many months previously.
Since installing some updates AND changing isp, I've had omv become unreachable after a few days, only fixable by powering off the omv box then powering up again. I'm using omv 2.1.x (can't check right now because it's unreachable). I thought rather than restart it and wait a few days, I'll leave in unreachable in case someone has a bright idea!
I highly doubt it's the updates - this box has been working fine for almost a year and never had this issue. Since going to a new isp a month or so ago, this has been happening. The physical change was swapping the old isp router and settings for the new one. I've set up a static IP in the new router as best I could (it's terrible). I can't get to OMV-firstaid at the moment because I can't reach the omv box. This means I can't ping it properly, can't log in to web interface, can't get ssh via putty, and this is all from my desktop windows pc. I have an android phone on the WLAN and it also can't access any of the ports for any of the services I have installed (Plex etc) so it's not just this PC.
Any thoughts appreciated. I'm happy to restart the omv box, but then I'll have to wait another few days for it to happen again. The way I can tell it has happened is my windows PC is scheduled to make system image backups which it stores on the omv box weekly. Sometimes it beeps at me telling me it can't located the network drive, and I immediately know the issue has happened.