On 2016-06-01 21:49:44 +0200, Guus Sliepen wrote:
> On Wed, Jun 01, 2016 at 09:06:20PM +0200, Vincent Lefevre wrote:
> > This means that various ifup scripts are probably buggy.
>
> What makes you think that?
Various scripts (like mine) have:
[ "$IFACE" != "lo" ] || exit 0
without testing "$IFACE" != "--all" or testing $ADDRFAM = "meta".
An example is avahi-autoipd, which has:
[ "$IFACE" != "lo" ] || exit 0
then later:
/bin/ip route add 169.254.0.0/16 dev $IFACE metric 1000 scope link
Note that $IFACE is expected here to be an interface, not --all!
> According to what you said earlier, it was hanging in z_home_net,
> which is not in any official Debian package, so I assume this script
> was written by you?
Yes.
> I haven't heard any reports of other scripts breaking, and ifupdown
> has been calling the scripts with IFACE="--all" since early 2012.
The breakage may be silent.
> > Also, why doesn't ifup write a log message about --all?
>
> So far there was no reason for it.
It would be better to know what's going on. There's a log message
for real interfaces. For the same reason, one could expect one for
--all.
Moreover, the interfaces(5) man page says:
IFACE physical name of the interface being processed
This is obviously wrong when IFACE is set to "--all".
--
Vincent Lefèvre <[email protected]> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
