netdev - Fixed PHYs and link up/down from user space ?

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Date:   Sat, 8 Sep 2018 13:59:31 +0000
From:   Joakim Tjernlund <Joakim.Tjernlund@...inera.com>
To:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Fixed PHYs and link up/down from user space ?

I am looking for a way to set physical link state from user space for a Fixed PHY.
Found the /sys/class/net/eth1/carrier I/F but that didn't work and I cannot find something else.

I want to make ifplugd/dhcp function as if there were a real cable there(or not)

 Jocke