On Fri, 18 Dec 2020 10:36:01 +0100
Didier Kryn <kryn@???> wrote:

> Le 18/12/2020 à 00:17, tito via Dng a écrit :
> > Hi,
> > a few days ago I was able to complete may new router
> > with 12 nics and 1 wifi. I moved the devuan drive from
> > my previous defunct box to the new one and experienced
> > all the problems reported in the "Ethernet names revisited"
> > thread.
> > I tried all the wise advice of the thread included my own
> > just to discover that nothing really works reliably.
> >
> > Things I've tried in various combinations:
> >
> > 1) 70-persistent-net.rules with mac
> > 2) 70-persistent-net.rules with pci bus numbers
> > 3) 60-persistent-net.rules with mac
> > 4) 60-persistent-net.rules with pci bus numbers
> > 5) net.ifnames=0 / net.ifnames=1 in grub
> > 6) biosdevname=0 in grub
> > 7) renaming the interfaces in /etc/network/interfaces
> > 8) using ifrename
> >
> > Always the 12 nics came up with different names,
> > or some of them were missing due to collisions
> > during the rename process and the router was
> > borked with me yelling.
> > Especially sarcastic I've found the definition of
> > the new "predictable names" because there is
> > nothing really predictable about them and at every
> > reboot they can be totally different, one time being
> > enp5s0 and next time enp8s0f1 depending on
> > the BIOS initialization process ( I suppose....).
> > At the end I started thinking about a KISS way to get
> > my persistent interface names back without
> > using udev/eudev or other non cooperative software.
> > I've come up with a init script that I've called
> > if2mac that matches interfaces to mac addresses
> > early in the boot process before networking is set up,
> > that for me works reliably (after a night of reboots).
> > I post it here so that If some bold beta testers on the list
> > are interested they can try it out in the hope that
> > it works for them (and AT THEIR OWN RISK!!!).
> > To use it copy the script to /etc/init.d/:
> >
> > cp if2mac /etc/init.d/
> > chmod +x /etc/init.d/if2mac
> > insserv if2mac
> >
> > and the configuration file to /etc/if2mac.conf.
> >
> > ## Sample configuration file for if2mac.
> > ##
> > ## WIRED_MAC_LIST and WIRELESS_MAC_LIST contain a list of MAC
> > ## addresses in the desired order top to down starting at
> > ## position 0. For example:
> > ## WIRED_MAC_LIST="\
> > ## 00:11:22:33:44:54 \ <= The space is needed!!!
> > ## 00:11:22:33:44:55 \
> > ## 00:11:22:33:44:56"
> > ## The WIRED_PREFIX and WIRELESS_PREFIX variables can be changed
> > ## at your liking (opt, port, whatever).
> >
> > WIRED_PREFIX="eth"
> >
> > WIRED_MAC_LIST="\
> > 00:12:21:c4:56:68 \
> > 00:12:21:c4:56:69 \
> > 00:13:21:c4:56:6a \
> > 00:13:21:c4:56:6b \
> > 00:33:18:04:a3:46 \
> > 00:34:18:04:a3:47 \
> > 00:35:18:04:a3:48 \
> > 00:36:18:04:a3:49 \
> > 00:36:18:04:a3:4a \
> > 00:36:18:04:a3:4b \
> > 00:36:18:04:a3:4c \
> > 00:56:18:04:a3:4d"
> >
> > WIRELESS_PREFIX="wlan"
> >
> > WIRELESS_MAC_LIST="\
> > 54:2a:a2:2b:b3:55"
> >
> > Attached you will find the init script and a sample
> > configuration file. Multiple configuration files
> > to allow more prefixes are not supported because
> > this kind of renaming could be done in /etc/network/interfaces
> > once the interfaces came up with predictable and persistent names.
> > At this time only
> >

> > en      Ethernet wired
> > et     Ethernet wired old
> > wl     Wireless local area network (WLAN)

> >
> > interfaces are supported with both old style
> > and new "predictable" names.
> >
> > Prerequisites are:
> > /bin/cat
> > /sbin/ip
> > and a mounted /sysfs.
> >
> > Hints improvements and critics are welcome.
> > Eventually if there is some interest this could be packaged
> > (with the help of some devuan packaging gurus).
> >
> > Hope this helps. Enjoy.
> > Ciao,
> > farmatito
>
>     Looks like the cleanest thing to do to workaround non-cooperative
> software, as you write. I'ts a pitty to be forced to that, but, at
> first read it looks well done. I didn't try it because nowadays I
> only use computers with ar most one eth and one wifi. Just found
> typos in a comment:
>
> # We need to passes to allow interface swappin
>
> should be
>
> # We need two passes to allow interface swapping
>
> Well done.
>
> --         Didier
>

Hi,
Thanks, typo fixed.

Ciao,
Tito