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I migrate from Ubuntu Server 14 to Ubuntu Server 16 I now I have problems because I'm not undertand that.

I hope that somebody can answer me.

Denner Portuguez
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1 Answers1

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These interface names are a new standard aimed at providing consistent (and persistent) names of network devices between different boots and Linux installs. There's a good amount of information and rationale here:

https://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames/

There's also the technical detail of the naming scheme here:

https://github.com/systemd/systemd/blob/master/src/udev/udev-builtin-net_id.c#L20

In short, for your case, the enpXsY signifies that it's a pci device (from the p), on pci bus X, in slot Y.

Jeremy Kerr
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    FWIW the first link above references the second link as the canonical source, but the second link has been edited and the comment with the information has been removed; which issue I've raised on a relevant github pull. – pbhj Jun 07 '19 at 13:06
  • For those interested in the logic used to name the interfaces, see man systemd.net-naming-scheme (available in Debian 11+ and, I imagine, Ubuntu 20.04+). Online version: https://www.freedesktop.org/software/systemd/man/systemd.net-naming-scheme.html – Tenders McChiken Sep 24 '21 at 07:22