Hi! I hope this is the proper mailing list. If not please tell me where do I post my question. I have been attempting to create a setup with a host debian (Lenny) system and currently two centos guest. I have managed to get everything working except network communications between my two guest. I can event login into the proper guest from my host. If you need tcpdumps and/or arp results I can provide them. Thank you. Here is my network configuration script. ------------------------------------------------------------------------------- #!/bin/sh count=4 case "$1" in start) brctl addbr br0 ifconfig br0 192.168.1.1 netmask 255.255.255.0 up for i in `seq 0 $count` do j=$(($i+100)); tunctl -b -u uja -t tap$i brctl addif br0 tap$i ifconfig tap$i up 0.0.0.0 promisc #route add -host 192.168.1.$j gw 192.168.1.1 dev br0 done #route add -net 192.168.1.0 netmask 255.255.255.0 gw 192.168.1.1 dev br0 iptables -t nat -A POSTROUTING -o eth1 -j MASQUERADE ;; stop) killall kvm iptables --flush iptables --table nat --flush iptables --delete-chain iptables --table nat --delete-chain route del -net 192.168.1.0 netmask 255.255.255.0 dev br0 for i in `seq 0 $count` do ifconfig tap$i down brctl delif br0 tap$i tunctl -d tap$i done ifconfig br0 down brctl delbr br0 ;; *) echo "Usage: $0 start|stop" >&2 exit 3 ;; esac ----------------------------------------------------------------------------- This is the commands I use to start my kvm instants. macaddr=$(/sbin/ifconfig tap0 | grep HWaddr | awk -F ' ' '{print $5}') kvm -name mds -no-acpi -hda $HOME/work/image1.img -net nic,macaddr=$macaddr -net tap,ifname=tap0,script=no,downscript=no & macaddr=$(/sbin/ifconfig tap1 | grep HWaddr | awk -F ' ' '{print $5}') kvm -name oss -no-acpi -hda $HOME/work/image2.img -net nic,macaddr=$macaddr -net tap,ifname=tap1,script=no,downscript=no & -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html