FreeBSD mixes names of similar USB to ethernet adapters

chef_carol

I have two Asix USB to ethernet adapters. The FreeBSD determines those as ue1 and ue2 adapters. The problem is, that on reboot, sometimes the interface ue1 become ue2 and viceversa, which pretty much screws my network configuration. The both adapters have the very similar MAC, and might be the issue when system tries to recognize it. On the Linux systems, I previously sorted this out by setting static udev rules by adapters mac address. How I...

Originally asked by fugitive on Stack Exchange (unix) (CC BY-SA 3.0).

uphilltech

Great question — answering as the UphillTech team:

The solution I suggest is call a script on attach that looks at the mac adress and renames the device. attach 0 { device-name "(ue)[0-9]+"; action "yourscript $device-name"; }; #!/bin/sh MAC="$(ifconfig "$1" | grep ether | awk -F ' ' '{print $2}' | tr '\n' '\0')" #ue1 MAC1="foo" #ue2 MAC2="bla" if [ "$MAC" = "$MAC1" ]; then ifconfig "$1" name 'ue1' elif [ "$MAC" = "$MAC2" ]; then ifconfig "$1" name 'ue2' fi Make sure to chmod 555 the script.

Full answer by arved: https://unix.stackexchange.com/a/419872 (CC BY-SA 3.0).

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