bt rules.d # cat 75-network-devices.rules
# Local network rules to name your network cards.
#
# These rules were generated by nethelper.sh, but you can
# customize them.
#
# You may edit them as needed.
# (If, for example, your machine has more than one network
# card and you need to be sure they will always be given
# the same name, like eth0, based on the MAC address)
#
# If you delete this file, /lib/udev/nethelper.sh will try to
# generate it again the next time udev is started.
#KERNEL=="eth?", ATTR{address}=="00:0c:29:c6:36:15", NAME="eth0"
#KERNEL=="eth?", ATTR{address}=="00:18:8b:d2:53:70", NAME="eth1"
#KERNEL=="wlan?", ATTR{address}=="00:1b:77:1f:f3:d2", NAME="wlan0"
#KERNEL=="wlan?", ATTR{address}=="00:c0:ca:19:aa:e0", NAME="wlan1"
#KERNEL=="wlan?", ATTR{address}=="00:c0:ca:19:ac:e9", NAME="wlan2"
bt rules.d # find / -name nethelper.sh
/lib/udev/nethelper.sh