On Fri, Jan 31, 2020 at 03:29:44PM -0500, Bob Weber wrote:
On 1/31/20 1:41 PM, Michael Stone wrote:
You went through more effort than you needed to. You can turn off
predictable names by simply booting with net.ifnames=0 on the kernel
command line (you can make that permanent by editing GRUB_CMDLINE_LINUX= in
/etc/default/grub and running update-grub).
The net.ifnames=0 used to work on my 2 port machine but quit about a year ago.
Messed up my firewall rules. Not very nice to have the internet side connected
to LAN port! That's when I went through the pain of understanding the systemd
way!
Yup, there's definitely a problem that needed to be solved. But when
people keep asking for things to go back to the way they used to be
because the new way is overly complicated, that's how to do it quickly
and simply.
There's also no need to disable 99-default.link if you add a new .link
with new rules that override the defaults.
FWIW, I would never force something to use "eth0" because it makes it
impossible to see at first glance that all of the default behavior has
been overridden. I suspect it would also break horribly if you add
another NIC that initializes before the one you're trying to rename to
eth0. Instead I'd give it a name like "internal0" or somesuch, so it's
clear that there's manual naming, and as a bonus it's a name that
includes a description of its intended use.
