On Mon 09 May 2022 at 19:49:11 (+0200), Hans wrote:
> > I don't know what you searched for.
> >
> I searched for all files below /etc of a string "IFACE", then looked at
> something like "IFACE=all"
> or "IFACE=--all" or similar.
It's always worth searching for the parts separately, even though a
lot of false hits can result.
But I googled iface=--all network
(adding network to avoid phone cases), and that hit man interfaces,
wherein I find (selected lines):
--✄✄✄✄--
ENVIRONMENT VARIABLES
All hook scripts, and the commands executed by pre-up, up, post-up,
pre-down, down and post-down have access to the following environment
variables:
IFACE The physical name of the interface being processed, or "--all"
(see below).
[ … ]
Additionally, all options given in an interface definition stanza are
exported to the environment in upper case with "IF_" prepended and with
hyphens converted to underscores and non-alphanumeric characters dis‐
carded.
When ifupdown is being called with the --all option, before doing any‐
thing to interfaces, it calls all the hook scripts (pre-up or down)
with IFACE set to "--all", LOGICAL set to the current value of --allow
parameter (or "auto" if it's not set), ADDRFAM="meta" and
METHOD="none". After all the interfaces have been brought up or taken
down, the appropriate scripts (up or post-down) are executed.
--✄✄✄✄--
So now the search might be for ifup or down, other options perhaps,
and somewhere or other, --all. A lot of alternatives. So best search
for just '\--all' (noting the escaped hyphen). Nowadays I tend to
check /etc/, /var/lib/dpkg/info/, and /lib/systemd/ for your
configuration, Debian's, and systemd's. So
# grep -r '\--all' /etc/ /var/lib/dpkg/info/ /lib/systemd/
and you'll know it's working as you'll hit some --allow strings.
> > What does your /etc/network/interfaces (and subdirectories) contain?
> >
>
> Only this:
>
> --------------------
>
> auto lo wlp5s0 enp0s10
>
> iface lo inet loopback
> address 127.0.0.1
> netmask 255.0.0.0
>
> --------------------
> Everything else is commented out, as network-manager recommends this.
Does NM really want "auto lo wlp5s0 enp0s10" in /e/n/i? That surprises
me. Another (pre-bullseye) package that avoided interfaces in /e/n/i,
wicd, would expect no mention of its interfaces in /e/n/i, leaving just:
auto lo
iface lo inet loopback
I would try that.
> > A workaround for your problem might be to set IFACE appropriately
> > in /etc/default/macchanger.
>
> Yes, that is a good idea, I will do so.
You could then unwind this, and just set ENABLE_INTERFACES in
/etc/default/macchanger as appropriate (and if required).
Cheers,
David.
