53-ec2-network-interfaces.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
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ACTION=="add", SUBSYSTEM=="net", KERNEL=="eth*", IMPORT{program}="/bin/sleep 1"

# ec2net.hotplug writes interface config for new interfaces, and adds or
# removes source routes.  It exits if network.service has not yet come up.
SUBSYSTEM=="net", RUN+="/etc/sysconfig/network-scripts/ec2net.hotplug"

# During bootup with an unconfigured ENI, the udev add event is fired more than
# once (the usual boot event, and another created later by ec2ifscan, which is
# run by elastic-network-interfaces.service).  The following rule has to use
# 'systemctl start' rather than ENV{SYSTEMD_WANTS} because systemd doesn't
# keep trying to start the service in the WANTS case.
ACTION=="add", SUBSYSTEM=="net", KERNEL=="eth*", \
  RUN+="/usr/bin/systemctl start ec2-ifup@$env{INTERFACE}"

# A remove event may be for an interface which was started by network.service
# (if config existed at boot) or by ec2-ifup@.service.  In the latter case,
# systemd should kill dhclient when the device disappears.  Still have to run
# ifdown to kill dhclient in the former case.
ACTION=="remove", SUBSYSTEM=="net", KERNEL=="eth*", \
  RUN+="/sbin/ifdown $env{INTERFACE}"