#!/bin/bash

 kvm /storage/kvm/etch-pooh.img -m 82 \
   -net nic,macaddr=52:54:00:12:34:52 \
   -net socket,mcast=230.0.0.1:54321 &
 sleep 2
 kvm /storage/kvm/etch-prasatko.img -m 82 \
   -net nic,macaddr=52:54:00:12:34:53 \
   -net socket,mcast=230.0.0.1:54321 & 
 sleep 2
 kvm /storage/kvm/lenny-kralicek.img -m 82 \
   -net nic,macaddr=52:54:00:12:34:54 \
   -net socket,mcast=230.0.0.1:54321 &
 sleep 2

 # nastavi tap0
 tunctl -t tap0
 ip addr add 192.168.68.1/29 dev tap0
 ip link set dev tap0 up 
 ip route add 192.168.69.0/24 via 192.168.68.2
 # udela router
 echo 1 >/proc/sys/net/ipv4/ip_forward
 iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

 kvm /storage/kvm/etch-krystufek.img -m 82 \
   -net nic,vlan=0,macaddr=52:54:00:12:34:51 \
   -net socket,vlan=0,mcast=230.0.0.1:54321 \
   -net nic,vlan=1,macaddr=52:54:00:12:34:50 \
   -net tap,vlan=1,ifname=tap0,script=no \
   -net nic,vlan=2,macaddr=52:54:00:12:34:49 \
   -net user,vlan=2 

 # uz nebude routovat 
 iptables -t nat -D POSTROUTING -o eth0 -j MASQUERADE
 echo 0 >/proc/sys/net/ipv4/ip_forward
 # zrusi tap0
 ip link set dev tap0 down 
 ip addr del 192.168.68.1/29 dev tap0
 tunctl -d tap0