Why can't I read /sys/class/net/$NIC_DEVICE/phys_port_id?
Issue
- Why can't I read /sys/class/net/$NIC_DEVICE/phys_port_id?
Sample log:
# ethtool -i ens3 | head -2
driver: e1000
version: 7.3.21-k8-NAPI
# cat /sys/class/net/ens3/phys_port_id
cat: /sys/class/net/ens3/phys_port_id: Operation not supported
Environment
- Red Hat Enterprise Linux 7
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