Try adding "-net user" to the end of the kvm command.
So:
$ /usr/bin/kvm -S -M pc -m 384 -smp 1 -name sec-hardy-i386 -uuid c28d7c53-0da0-75c0-b360-df536d434f51 -monitor pty -pidfile /var/run/libvirt/qemu//sec-hardy-i386.pid -boot c -drive file=/srv/vms/kvm/sec-hardy-i386/root.qcow2,if=ide,index=0,boot=on -net nic,macaddr=00:16:36:70:61:a2,vlan=0,model=virtio -net tap,fd=18,script=,vlan=0,ifname=vnet1 -serial none -parallel none -usb -vnc 127.0.0.1:2 -net user
This is working like a champ for me, with a Jaunty host, and both Hardy and Jaunty guests:
$ kvm -hda hardy-server.img -cdrom ../iso/ubuntu-8.04.1-server-amd64.iso -net nic,model=virtio -net user
Jamie-
Try adding "-net user" to the end of the kvm command.
So: 0da0-75c0- b360-df536d434f 51 -monitor pty -pidfile /var/run/ libvirt/ qemu//sec- hardy-i386. pid -boot c -drive file=/srv/ vms/kvm/ sec-hardy- i386/root. qcow2,if= ide,index= 0,boot= on -net nic,macaddr= 00:16:36: 70:61:a2, vlan=0, model=virtio -net tap,fd= 18,script= ,vlan=0, ifname= vnet1 -serial none -parallel none -usb -vnc 127.0.0.1:2 -net user
$ /usr/bin/kvm -S -M pc -m 384 -smp 1 -name sec-hardy-i386 -uuid c28d7c53-
This is working like a champ for me, with a Jaunty host, and both Hardy and Jaunty guests: ubuntu- 8.04.1- server- amd64.iso -net nic,model=virtio -net user
$ kvm -hda hardy-server.img -cdrom ../iso/
:-Dustin