On 2023-09-01, D. R. Evans wrote: > The machine has two ethernet ports, which used to be eth0 and eth1 in the old > days, but are now magically called "Wired connection enp11s0(eth0)" and "Wired > connection enp12s0(eth1)".
If you want old names put in /etc/default/grub GRUB_CMDLINE_LINUX="net.ifnames=0" (add other parameters if you have some) and do update-grub > zserver# nmcli networking connectivity > full network manager is good for changing networks. For a server the network must not change normally. So you could put configuration in /etc/network/interfaces.d/ with something like : auto enp11s0 iface enp11s0 inet static mtu 1500 metric 101 address 209.97.232.18/24 netmask 255.255.255.0 gateway 209.97.232.1 auto enp12s0 iface enp12s0 inet static mtu 1500 metric 100 address 192.168.0.1/24 netmask 255.255.0.0 auto lo iface lo inet loopback I you want IPv6 add : iface enp11s0 inet6 auto iface enp12s0 inet6 auto Once it works you can then remove network manager
