75-persistent-net-generator.rules

# Copyright (C) 2012 Amazon.com, Inc. or its affiliates.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License").
# You may not use this file except in compliance with the License.
# A copy of the License is located at
#
#    http://aws.amazon.com/apache2.0/
#
# or in the "license" file accompanying this file. This file is
# distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS
# OF ANY KIND, either express or implied. See the License for the
# specific language governing permissions and limitations under the
# License.

# these rules generate rules for persistent network device naming
SUBSYSTEM!="net", GOTO="persistent_net_generator_end"
KERNEL!="eth*", GOTO="persistent_net_generator_end"
ACTION!="add", GOTO="persistent_net_generator_end"
NAME=="?*", GOTO="persistent_net_generator_end"

# do not create rule for eth0
ENV{INTERFACE}=="eth0", GOTO="persistent_net_generator_end"

# read MAC address
ENV{MATCHADDR}="$attr{address}"

# do not use empty address
ENV{MATCHADDR}=="00:00:00:00:00:00", GOTO="persistent_net_generator_end"

# discard any interface name not generated by our rules
ENV{INTERFACE_NAME}=="?*", ENV{INTERFACE_NAME}=""

# default comment
ENV{COMMENT}="elastic network interface"

# write rule
IMPORT{program}="write_net_rules"

# rename interface if needed
ENV{INTERFACE_NEW}=="?*", NAME="$env{INTERFACE_NEW}"

LABEL="persistent_net_generator_end"