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