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#!/bin/bash
# Copyright (C) 2015 by Mike Gabriel <mike.gabriel@it-zukunft-schule.de>
# This script is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This script is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the
# Free Software Foundation, Inc.,
# 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
WIFIDEV=${WIFIDEV:-wlan0}
export DEBIAN_FRONTEND=noninteractive
apt-get remove -q -y --purge resolvconf
systemctl disable NetworkManager
systemctl enable systemd-networkd.service
systemctl enable systemd-resolved.service
systemctl start systemd-resolved.service
rm /etc/resolv.conf
ln -s /run/systemd/resolve/resolv.conf /etc/resolv.conf
cat > /etc/systemd/network/20-dhcp.network << EOF
[Match]
Name=eth*
[Network]
DHCP=yes
EOF
cat > /etc/systemd/network/21-dhcp-wireless.network << EOF
[Match]
Name=$WIFIDEV
[Network]
DHCP=yes
EOF
cat > /etc/systemd/system/wpa_supplicant@.service << EOF
[Unit]
Description=WPA supplicant daemon (interface-specific version)
Requires=sys-subsystem-net-devices-%i.device
After=sys-subsystem-net-devices-%i.device
Before=network.target
Wants=network.target
# NetworkManager users will probably want the dbus version instead.
[Service]
Type=simple
ExecStart=/sbin/wpa_supplicant -c/etc/wpa_supplicant/wpa_supplicant-%I.conf -i%I
[Install]
Alias=multi-user.target.wants/wpa_supplicant@%i.service
EOF
touch /etc/wpa_supplicant/wpa_supplicant-$WIFIDEV.conf
chmod go-rwx /etc/wpa_supplicant/wpa_supplicant-$WIFIDEV.conf
systemctl enable wpa_supplicant@$WIFIDEV.service
systemctl disable networking
systemctl disable wpa_supplicant.service
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