WIRED-PROPERTIES.CARRIER: off

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Still perusing a usb/ethernet issue (originally ref https://forum.pine64.org/showthread.php?tid=10882). Currently running Mobian, my usb/ethernet connection shows "WIRED-PROPERTIES.CARRIER: off".

GENERAL.DEVICE:                          usb0
GENERAL.TYPE:                              ethernet
GENERAL.HWADDR:                       --:--:--:--:--:--
GENERAL.MTU:                               1500
GENERAL.STATE:                            100 (connected)
GENERAL.CONNECTION:               USB
GENERAL.CON-PATH:                     /org/freedesktop/NetworkManager/ActiveConnection/2
WIRED-PROPERTIES.CARRIER:    off
IP4.ADDRESS[1]:                              10.66.0.1/8
IP4.GATEWAY:                                   --
IP4.ROUTE[1]:                                   dst = 10.0.0.0/8, nh = 0.0.0.0, mt = 1500

Anyone know how to set it ON?

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/sys/devices/platform/soc/1c19400.phy/usb_role/usb0-role-switch/power/control
/sys/devices/platform/soc/1c19000.usb/musb-hdrc.4.auto/gadget/net/usb0/power/control
/sys/devices/platform/usb0-vbus/regulator/regulator.1/power/control
/sys/devices/platform/usb0-vbus/power/control

Perhaps one of these? Guess not, all = auto and are not modifiable.