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Re: Mystery interface reported by ip.


On Sun, Oct 28, 2018 at 11:18:09AM -0700, peter@xxxxxxxxxxx wrote:
> root@joule:/etc# ip link show | grep rename
> 4: rename4: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
> root@joule:/etc# find . -type f -exec grep "rename4" '{}' \; -print
> root@joule:/etc#
> So ip reports an interface named rename4 but it doesn't 
> appear anywhere in /etc/.  Where does the name originate?

Udev failed to rename this interface to some Predictable™ name.
I'd search dmesg for clues.