#!/bin/bash
#
#   uml-net - a script to set up a UML's network
#   Copyright (C) 2005 Frank Sorenson (frank@tuxrocks.com)

#   This program 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 program 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

UMID=uml1
MAC_ADDRESS='FE:FD:AB:CD:EF:02'
ARP_UML_IP=10.0.0.14
MASK=255.255.255.0
BCAST=10.0.0.255

###

export HOST_IF=`route -n |egrep "^0\.0\.0\.0"|cut -c 73-`
export HOST_IP=`ifconfig ${HOST_IF} | grep "inet addr:" | cut -f 2 -d ":"|cut -f 1 -d " "`

modprobe tun
chmod 666 /dev/net/tun
tunctl -d ${UMID}
tunctl -t ${UMID}
ifconfig ${UMID} ${HOST_IP} broadcast ${BCAST} netmask ${MASK} up
echo 1 > /proc/sys/net/ipv4/ip_forward
route add -host ${ARP_UML_IP} dev ${UMID}
echo 1 > /proc/sys/net/ipv4/conf/${UMID}/proxy_arp
arp -Ds ${ARP_UML_IP} ${HOST_IF} pub


export NET_SETUP="eth0=tuntap,${UMID},${MAC_ADDRESS}"

echo "Add ${NET_SETUP} to the UML command line"