renaming ethernet interface not working

[Karl Auer]

On Fri, 2016-05-06 at 09:59 +0200, Tom H wrote:
> 0) "Re-"naming to kernel names isn't recommended, if not actually
> discouraged.

Can you explain what you mean by "kernel names"? Do you mean "eth0 and
"wlan0"? If so, how are these special to the kernel?

> 1) Are you sure that the "MACAddress=" in "11-eth0.link" is correct?

Yes.

> 2) What's the value of "ID_NET_LINK_FILE" for "enp0s31f6"?

E: ID_NET_LINK_FILE=/etc/systemd/network/11-eth0.link

However, I gave in and changed the name using a udev rule - that works.

Interestingly, udevadm now shows the new name eth0 as an alias, whereas
wlan0 is not shown as an alias. Compare (two lines, mailer may fold):

E: SYSTEMD_ALIAS=/sys/subsystem/net/devices/wlan0
E: SYSTEMD_ALIAS=/sys/subsystem/net/devices/eth0 /sys/subsystem/net/devices/eth0

> 3) Does copying "/lib/systemd/network/99-default.link" to
> "/etc/systemd/network/" and changing "NamePolicy=" to
> "NamePolicy=kernel" keep both kernel names?

I need to know what you mean by "kernel name" before I can answer. But
would not 10 and 11 mask 99?

> 4) Does setting "net.ifnames=0" at the kernel cmdline keep both
> kernel names?

Again, need to know what "kernel names" are.

Regards, K.

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Karl Auer (kauer at biplane.com.au)
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