samples/net/eth_native_posix/net_setup_host

#!/bin/sh
#
# Copyright (c) 2018 Intel Corporation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License 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.

# This script is called by native-posix board when TAP network interface
# is taken up by Zephyr. The script should setup the host system so that
# connectivity will work with Zephyr.

while [ $# -gt 0 ]; do
    case "$1" in
	-f|--file)
	    CONF_FILE="$2"
	    shift
	    shift;;
	-i|--interface)
	    # Only first -i option is taken into account. This way
	    # the driver added -i option is ignored if user has specified
	    # the -i option to host setup script command.
	    if [ -z "$IFACE" ]; then
		IFACE="$2"
	    fi
	    shift
	    shift;;
	*)
	    shift;;
    esac
done

if [ `id -u` != 0 ]; then
    echo "Warning: This script will need admin rights to setup \
network interface!"
fi

if [ -z "$IFACE" ]; then
    IFACE="zeth"
fi

if [ -z "$CONF_FILE" ]; then
    DIR=`dirname $0`
    CONF_FILE="$DIR/net_setup_host.conf"
fi

if [ -f "$CONF_FILE" ]; then
    . $CONF_FILE
else
    echo "Warning: config file $CONF_FILE does not exist!"
fi

ip link set dev $IFACE up

if [ ! -z "$HWADDR" ]; then
    ip link set dev $IFACE address $HWADDR
fi

if [ ! -z "$IPV6_ADDR_1" ]; then
    ip -6 address add $IPV6_ADDR_1 dev $IFACE
fi

if [ ! -z "$IPV6_ROUTE_1" ]; then
    ip -6 route add $IPV6_ROUTE_1 dev $IFACE
fi

if [ ! -z "$IPV4_ADDR_1" ]; then
    ip address add $IPV4_ADDR_1 dev $IFACE
fi

if [ ! -z "$IPV4_ROUTE_1" ]; then
    ip route add $IPV4_ROUTE_1 dev $IFACE
fi