25.3.3. Asignar subcanales y nombres de dispositivos de red

La opción DEVICE= en el archivo ifcfg no determina la asignación de subcanales a nombres de dispositivo de red. En su lugar, el archivo de reglas udev /etc/udev/rules.d/70-persistent-net.rules determina qué canal de dispositivo de red obtiene el nombre de dispositivo de red determinado.
Al configurar un nuevo dispositivo de red en System z, el sistema automáticamente añade una nueva regla a ese archivo y asigna el siguiente nombre de dispositivo no utilizado. Puede editar luego los valores asignados a la variable NAME= para cada dispositivo.
Contenido de ejemplo de /etc/udev/rules.d/70-persistent-net.rules:
# This file was automatically generated by the /lib/udev/write_net_rules 
# program run by the persistent-net-generator.rules rules file. 
# 
# You can modify it,as long as you keep each rule on a single line. 
# S/390 qeth device at 0.0.f5f0 
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="qeth", KERNELS=="0.0.f5f0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0" 
# S/390 ctcm device at 0.0.1000 
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="ctcm", KERNELS=="0.0.1000", ATTR{type}=="256", KERNEL=="ctc*", NAME="ctc0" 
# S/390 qeth device at 0.0.8024 
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="qeth", KERNELS=="0.0.8024", ATTR{type}=="1", KERNEL=="hsi*", NAME="hsi0" 
# S/390 qeth device at 0.0.8124 
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="qeth", KERNELS=="0.0.8124", ATTR{type}=="1", KERNEL=="hsi*", NAME="hsi1" 
# S/390 qeth device at 0.0.1017 
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="qeth", KERNELS=="0.0.1017", ATTR{type}=="1", KERNEL=="eth*", NAME="eth3" 
# S/390 qeth device at 0.0.8324 
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="qeth", KERNELS=="0.0.8324", ATTR{type}=="1", KERNEL=="hsi*", NAME="hsi3" 
# S/390 qeth device at 0.0.8224 
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="qeth", KERNELS=="0.0.8224", ATTR{type}=="1", KERNEL=="hsi*", NAME="hsi2" 
# S/390 qeth device at 0.0.1010 
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="qeth", KERNELS=="0.0.1010", ATTR{type}=="1", KERNEL=="eth*", NAME="eth2" 
# S/390 lcs device at 0.0.1240
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="lcs", KERNELS=="0.0.1240", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1" 
# S/390 qeth device at 0.0.1013 
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="qeth", KERNELS=="0.0.1013", ATTR{type}=="1", KERNEL=="hsi*", NAME="hsi4"