On Sat, May 09, 2015 at 02:49:35AM -0500, peter green wrote:

The main downside is that by nature the device names are not familiar
to current admins yet. For BIOS provided names you get e. g. ens0, for
PCI slot names enp1s1 (ethernet) or wlp3s0 (wlan). But that's a
necessary price to pay (biosdevname names look similar).
The stability of these names appears to be an illusion.

The "path based names" use the PCI bus number as their "root". PCI bus
numbers are dynamically allocated as the bios enumerates the busses.

Note that biosdevname uses slot numbers, not PCI bus numbers.

The following provides technical details on how biosdevname enumerates:
http://linux.dell.com/files/whitepapers/consistent_network_device_naming_in_linux.pdf

--
Jared Domínguez
Infrastructure Software Engineering
Dell | Enterprise Solutions Group

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