On Sat, Feb 09, 2019 at 06:38:49PM +0100, Adam Borowski wrote: > On Sat, Feb 09, 2019 at 06:06:31PM +0100, Ingo von Laer wrote: > > Dear Sirs and Ladies, > > with the implementation of the NetworkManager the little Problems began. > > WFT, "Wired Connection 1" tree blanks an config-file in the etc. > > The biggest Problem are the fancy new names for the Ethernet. What is the > > problem with eth0? Quoting https://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames/ } } Why? } } The classic naming scheme for network interfaces applied by the kernel } is to simply assign names beginning with "eth0", "eth1", ... to all } interfaces as they are probed by the drivers. As the driver probing } is generally not predictable for modern technology this means that } as soon as multiple network interfaces are available the assignment } of the names "eth0", "eth1" and so on is generally not fixed anymore } and it might very well happen that "eth0" on one boot ends up being } "eth1" on the next. This can have serious security implications, for } example in firewall rules which are coded for certain naming schemes, } and which are hence very sensitive to unpredictable changing names. } } To fix this problem multiple solutions have been proposed and } implemented. For a longer time ... The whole article is a good read. > > All server tools like isc-dhcp-server or FAI are using > > eth0. If you must use the fancy names for the eth0 then implement it so > > that other packages can use them too, or simpler leave the name eth0. > > You want predictable interface names, then. We all want predictable interface names. > To switch them to predictable, append "net.ifnames=0" to kernel's cmdline; > the argument will then be parsed by udev (the on-filesystem way to do so > changes quite often). Easiest way to change the cmdline is > "dpkg-reconfigure grub-*" where * can be "pc" or "efi" depending on how your > machine boots. At the URL from above are two other options. IMHO better options. Groeten Geert Stappers -- Leven en laten leven
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