SUBSYSTEM!="net", GOTO="netdevicename_end"
ACTION!="add",    GOTO="netdevicename_end"
NAME=="?*",       GOTO="netdevicename_end"
ATTR{type}!="1",  GOTO="netdevicename_end"
ENV{DEVTYPE}=="?*", GOTO="netdevicename_end"

# whitelist all Dell systems
ATTR{[dmi/id]sys_vendor}=="Dell*", ENV{UDEV_BIOSDEVNAME}="1"

# kernel command line "biosdevname={0|1}" can turn off/on biosdevname
IMPORT{cmdline}="biosdevname"
ENV{biosdevname}=="?*", ENV{UDEV_BIOSDEVNAME}="$env{biosdevname}"
# ENV{UDEV_BIOSDEVNAME} can be used for blacklist/whitelist
# but will be overwritten by the kernel command line argument
ENV{UDEV_BIOSDEVNAME}=="0", GOTO="netdevicename_end"
ENV{UDEV_BIOSDEVNAME}=="1", GOTO="netdevicename_start"

# off by default
GOTO="netdevicename_end"

LABEL="netdevicename_start"

# using NAME= instead of setting INTERFACE_NAME, so that persistent
# names aren't generated for these devices, they are "named" on each boot.
SUBSYSTEMS=="pci", PROGRAM="/sbin/biosdevname --smbios 2.6 --nopirq --policy physical -i %k", NAME="%c"  OPTIONS+="string_escape=replace"

LABEL="netdevicename_end"