restart USB to Ethernet management interface if not RUNNING #3999
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PROBLEM:
Sometimes after "config reload" command the management interface (eth0) connected over ETH-USB device is
UP/RUNNING on a remote peer side, but
stays UP/not-running on the local side.
Well-known negotiation problem of ETH-over-USB devices (ASIX).
SOLUTION:
If the management interface is a USB device and is not RUNNING (/sys/class/net/${if}/operstate is not "up") at the end of the "config reload" command
bring it down and up with delay to trigger renegotiation.
What I did
restart USB to Ethernet management interface if not at RUNNING state
How I did it
If the management interface is a USB device and is not at RUNNING state at the end of the config reload command, bring it down and up with delay
How to verify it
Manual test
Previous command output (if the output of a command-line utility has changed)
New command output (if the output of a command-line utility has changed)