Hello @Hooverdan and thanks for your input.
Today’s update: Gigabit speed has been restored!
In the afternoon I got this on dmesg:
[Wed Apr 14 16:35:07 2021] e1000e: NIC Link is Down
[Wed Apr 14 16:35:10 2021] e1000e: NIC Link is Up 1000 Mbps Full Duplex,
And at the same time I see this on my opnsense appliance:
2021-04-14T16:35:05 opnsense /usr/local/etc/rc.newwanip: On (IP address: xxx.xxx.xxx.xxx) (interface: LAN[lan]) (real interface: igb0).
2021-04-14T16:35:05 opnsense /usr/local/etc/rc.newwanip: IPv4 renewal is starting on ‘igb0’
2021-04-14T16:35:05 opnsense /usr/local/etc/rc.linkup: Hotplug event detected for LAN(lan) but ignoring since interface is configured with static IP (xxx.xxx.xxx.xxx)
2021-04-14T16:35:04 kernel igb0: link state changed to UP
2021-04-14T16:35:00 opnsense /usr/local/etc/rc.linkup: Hotplug event detected for LAN(lan) but ignoring since interface is configured with static IP (xxx.xxx.xxx.xxx)
2021-04-14T16:35:00 kernel igb0: link state changed to DOWN
A couple of days ago; I had disconnected my opnsense router from my network configuration for troubleshooting and plugged it back in within two hours. I suppose this was the cause of my issue although I don’t know why. And still; I have no idea what is this ‘hotplug event’ that opnsense reports.
I am indeed running the CentOS version of Rockstor.
With regard to updates; the only thing I do is check and apply any updates from Rockstor web-ui when I find them available.
Apart from that I googled about updating my Intel NIC on CentOS and every single guide dictates to run ‘yum update’ beforehand. I am not especially tech-savvy when it comes to Linux; but from what I remember I am not supposed to do so when runnning Rockstor OS. So I am a bit puzzled about that.
So all is well in my little network. We have a saying where I come from: “Time is the best remedy”.
In my case; I just had to wait for my router to renew the ip addresses that is handing out.
Regards to all!