[Hamara-devel] Predictable Network Interface Names came in Debian in systemd 220-7

shirish shirish at hamaralinux.org
Thu Jun 18 16:06:58 BST 2015


Hi all,

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

As shared in the use-cases shared it was a common occurrence that at 
times of booting the kernel munged up the order if there was more than 1 
and you had to explicitly tie it down on the udev.

It's a huge change in the sense that instead of the familiar eth0,wlan0 
or whatever worked for you.

While this was shipped in systemd/udev 197 somewhere in 2013/14 there 
was quite a bit of discussion back and forth and a decision was taken 
that it is quite an intrusive change as many admins are used to the old 
way of doing things.

Even though I understand the change, I will probably pore over it in a 
bit more detail this week-end and do the change on one of my systems to 
see how it works.

Once people understand it, it should inherently make life much more 
simpler when you have more than one network interface (typically 
load-balancing, connecting between two or more networks, running IDS 
etc. all valid use-cases on the server end)

Been Reading through the systemd changelog, udev NEWS.gz and the link 
given up above.

Once I'm done would probably blog about it over the week-end, in the end 
it's all good although would be a bit unwieldy till one is familiar with 
the new naming structure.

As always, feedback is welcome.
-- 
Regards,
Shirish Agarwal,
Community Lead,
Hamaralinux.org


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