On Mon, Jul 10, 2017 at 01:57:08PM +0200, Rene Engelhard wrote: > On Mon, Jul 10, 2017 at 01:44:00PM +0200, Maximilian Althaus wrote: > > Okay, I understand! But I have the problem that the Debian 9 VM can not > > No, you don't. You already got told about ip -r. "route" and "ifconfig" are > not > installed per default anymore.
All packages shipped by Debian[1] either don't require net-tools anymore, or pull them in via dependency. If you wrote a custom script, you might need to either migrate to ip or a friend (like, netstat -> ss), or install net-tools. The latter has been deprecated since a long, long time, so the time to finally pull the plug had to come sooner or later. > > get an internet connection. This is because the network configuration > > (/etc/network/interfaces) fail, because Debian 9.0 could not found a > > device named eth0, but with Debian 8.8 with the same configuration I have > https://www.debian.org/releases/stable/amd64/release-notes/ch-whats-new.de.html#new-interface-names > > eth0 will be kept on upgrades, but new installs get new interface names > (that is good, that removed unpredictability if you add a new network card.) Not sure how is it possible to argue that "eth0" is _less_ predictable than ensp3 or wlxf81a671bcfae. If you replace a network card, all your network settings go wrong. Same if you reconnect a removable card. Or upgrade your kernel. Or, dist-upgrade. Or, in case of a VM, use a slightly different command line. Or, on some hardware, on every boot. The random number after that "ensp" or "wlxf" can be re-rolled unexpectedly -- hope you have an out-of-band way to reach that machine (ilo and iDrac are not really trustworthy). To fix this problem, you can: ln -s /dev/null /etc/udev/rules.d/80-net-setup-link.rules update-initramfs -u Also it's worth noting that if you do rename interfaces on your own (kind of a must if there's more than one of its type -- both eth0 vs eth1 or ensp42 vs ensp78 require documentation that's guaranteed to be misplaced while out0 vs lan0 are self-describing even to an outsider), in jessie this overruled the above "predictable" rule, in stretch it apparently does not. HTH, meow! [1]. At least popular ones -- there's a possibility something obscure has slipped through, in which case, please install net-tools and report a bug. -- ⢀⣴⠾⠻⢶⣦⠀ ⣾⠁⢠⠒⠀⣿⡁ A dumb species has no way to open a tuna can. ⢿⡄⠘⠷⠚⠋⠀ A smart species invents a can opener. ⠈⠳⣄⠀⠀⠀⠀ A master species delegates.
