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Last active May 10, 2026 14:48
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Make Linux interface names more predictable with udev
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makeifnamepredictable.md

Use udev rules to lock in Linux ifnames

Create a udev rule to lock in the physical network interface name assigned by Linux, so that the system won't change it the next time a PCI device is added or removed.

Create /etc/udev/rules.d/10-network-names.rules, and then edit as follows:

SUBSYSTEM=="net", ACTION=="add", ATTR{address}=="xx:xx:xx:xx:xx:xx", NAME="enpNxN"

"ATT{address}" is unique MAC of the physical network device (seen in output of ip addr), while "NAME" is the interface name assigned to it by Linux (this will usually be something like "enp6s0".

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