Armbianmonitor:
http://ix.io/232T
on a Sunvell R69 (H2) and a NanoPi Neo (H3) I got these "old known" eth0 Link Up/Down syndrom, but couldnt find a solution in the forum while using the search-engine
armbianmonitor -u
System diagnosis information will now be uploaded to
Sunvell R69 - Linux sunvell-r69 5.4.0-rc8-sunxi #19.11.3 SMP Wed Nov 27 17:01:29 CET 2019 armv7l armv7l armv7l GNU/Linux :
http://ix.io/232T
NanoPi Neo - Lin
Update:
I "fixed it" with https://mmonit.com/wiki/Monit/Installationmonit
Basically, each 60 seconds it will check if my "eth0" ethernet interface is up. If not, it tries to wake it up.
If for some reason, the port/board cannot wake up the ethernet interface... I have a secondary check (ping Google DNS IP 10 times in a row -> one per minute). If 10/10 failed, it reboots the board.
Is not ideal, but now I have a "hands free" board. This is in a countryside, so