Moreover, in the syslog, there are a lot of server disconneted records. I am using X550 for eth0. While I cannot connect eth0 (X550), I can connect to eth1 (i210). I have not observed the link lost on i210. But on X550, it is quite offen.
Jul 24 05:21:58 MediaServer upsmon[6403]: Poll UPS [
[email protected]] failed - Server disconnected
Jul 24 05:21:58 MediaServer upsmon[6403]: Communications with UPS
[email protected] lost
Jul 24 05:22:03 MediaServer upsmon[6403]: Login on UPS [
[email protected]] failed - got [ERR ACCESS-DENIED]
Jul 24 05:22:08 MediaServer upsmon[6403]: Communications with UPS
[email protected] established
Jul 24 09:34:20 MediaServer upsmon[6403]: Poll UPS [
[email protected]] failed - Server disconnected
Jul 24 09:34:20 MediaServer upsmon[6403]: Communications with UPS
[email protected] lost
Jul 24 09:34:25 MediaServer upsmon[6403]: Login on UPS [
[email protected]] failed - got [ERR ACCESS-DENIED]
Jul 24 09:34:30 MediaServer upsmon[6403]: Communications with UPS
[email protected] established
Jul 24 09:39:00 MediaServer webGUI: Successful login user root from 192.168.40.76
Jul 24 09:40:13 MediaServer webGUI: Successful login user root from 192.168.40.76
Jul 24 09:40:20 MediaServer kernel: docker0: port 3(veth8406a9a) entered blocking state
Jul 24 09:40:20 MediaServer kernel: docker0: port 3(veth8406a9a) entered disabled state
Jul 24 09:40:20 MediaServer kernel: device veth8406a9a entered promiscuous mode
Jul 24 09:40:20 MediaServer kernel: docker0: port 3(veth8406a9a) entered blocking state
Jul 24 09:40:20 MediaServer kernel: docker0: port 3(veth8406a9a) entered forwarding state
Jul 24 09:40:20 MediaServer kernel: docker0: port 3(veth8406a9a) entered disabled state
Jul 24 09:40:20 MediaServer kernel: eth0: renamed from veth6d2fbb8
Jul 24 09:40:20 MediaServer kernel: IPv6: ADDRCONF(NETDEV_CHANGE): veth8406a9a: link becomes ready
Jul 24 09:40:20 MediaServer kernel: docker0: port 3(veth8406a9a) entered blocking state
Jul 24 09:40:20 MediaServer kernel: docker0: port 3(veth8406a9a) entered forwarding state
Jul 24 09:40:21 MediaServer avahi-daemon[19002]: Joining mDNS multicast group on interface veth8406a9a.IPv6 with address fe80::e4b4:1eff:fe92:af7c.
Jul 24 09:40:21 MediaServer avahi-daemon[19002]: New relevant interface veth8406a9a.IPv6 for mDNS.
Jul 24 09:40:21 MediaServer avahi-daemon[19002]: Registering new address record for fe80::e4b4:1eff:fe92:af7c on veth8406a9a.*.