I see the same here.
I would add that system > administration > network works.
The only thing that doesn't work (at least here) is gnome-nettool, either
command line or as in
system > administration > network tools > {Select interface} > {Configure
button>}
It then yelds the infamous "The interface does not exist".
As a side note, I think there is something strange in the interface handling
logic when one changes the NIC, anyway. This might or might not be related to
the bug we're talking about, but the contents of /etc/network/interfaces
after a NIC change doesn't seem to be what it should be, and it takes a few
reboots (with the machine coming up with no interface at all) and manual fixing
of the /etc/network/interfaces fix before things get back to normal, and
stable. When the machine comes up with no interface at all, I see that
something has removed all but the loopback device from /etc/network/interfaces.
I'm trying to understand what goes on there.
Might also be related to what udev does: I've noticed that if I manually load
my enet driver at early boot (i.e. while still in initramfs), it appears as
eth0. While when the machine is done booting, i.e. after the root partition has
been mounted, it appears as eth1.
What I'm seeing when performing a NIC replacement might also happen when using
two alternative ways to access the network, like a wired connection and a WiFi
one used alternatively.
--
network-admin error: The interface does not exist
https://bugs.launchpad.net/bugs/184711
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