Consistent Network Device Naming

https://en.wikipedia.org/wiki/Consistent_Network_Device_Naming

• eno# on board
• ens#, 10 Gbps
• enp, PCI
• eth#
• veth
• tun#
• virbr0
• virbr0-nic
• macvtap#
• tg3
• docker0
• wlan0

Examples:

• ens3f0
• ens3f1
• enx0t6b8f279a99 (cdc_ether)

Device naming rules

• Onboard interfaces at firmware index numbers eno[1-N]
• Interfaces at PCI Express hotplug slot numbers ens[1-N]
• Adapters in the specified PCI slot, with slot index number on the adapter enp<PCI slot>s<card index no>
• If firmware information is invalid or rules are disabled, use traditional eth[0-N]

Related terms

• virbr, brctl show
• eth, ens
• ethtool
• macOS: networksetup -listnetworkserviceorder
• udev
• /sys/class/net/

See also

• KVM networking, virsh net, MacVTap, Macvtap logs, virtio, trustGuestRxFilters
• Linux Kernel: namespaces, Cgroups, OOM, proc, Linux Kernel changelog, sysctl, userfaultfd, Grub, ENOSPC, ENOMEM, DKMS, syscall, Transparent huge pages, smatch, sysfs, vm.swappiness, CFS, Runlevel, Jens Axboe, Consistent Network Device Naming, Initial ramdisk (initrd), modprobe, MTD, Linux Kernel vulnerabilities, /sys/kernel/, KernelCare, unix://, Data Plane Development Kit (DPDK)
• Linux networking: Consistent Network Device Naming (eth, ens), DPDK, Alias IP, bonding, Wlan0, ip [link, route], ifconfig netstat ss lsof ping ethtool mii-tool arping nmcli(RHEL) route networkctl, netplan, tc

RHCSA & RHCE Red Hat Enterprise Linux 7: Training and Exam Preparation Guide (EX200 and EX300), Third Edition Paperback – 27 Mar 2015 by Asghar Ghori