virtual network with qemu

marco.borsatino at marco.borsatino at
Thu May 14 06:14:14 UTC 2009

Hi to all.
I'd like to implement a little virtual network using QEMU 0.10.2, but, until now, I have failed.
This is the situation.
Host: AMD 64 running FreeBSD 7.2
nfe0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
	ether 00:15:f2:44:2d:f9
	inet netmask 0xffffff00 broadcast
	media: Ethernet autoselect (100baseTX <full-duplex>)
	status: active
plip0: flags=108810<POINTOPOINT,SIMPLEX,MULTICAST,NEEDSGIANT> metric 0 mtu 1500
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
	inet6 fe80::1%lo0 prefixlen 64 scopeid 0x3 
	inet6 ::1 prefixlen 128 
	inet netmask 0xff000000 
I've create an image using the FreeBSD 7.2 DVD:
#qemu-img create -f qcow2 hda fbsd72.img 10G
The image has been created.
#qemu -L /usr/local/share/qemu/ -cdrom /dev/acd0 -m 512 -boot d fbsd72.img
Alfter a long time, the installation of the guest system has been completed.
When the installation program asked for information about network configuration, as a 
first step, I chose DHCP configuration and, as usualy, the network has been set
like this:
When the installation of the guest PC was finished, I've copied the 
image to pc01.img, to keep the original untouched. After that I've started qemu like this:
#qemu -L /usr/local/share/qemu -localtime -net nic,macaddr=00:15:f2:44:2d:01 -net socket,mcast= -hda pc01.img -cdrom /dev/acd0 &
but the network in the guest system does not work.
ifconfig in the guest system tells:
#ifconfig -a
ed0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
  ether 00:15:f2:44:2d:01
  media: Ethernet 10baseT/UTP <full-duplex>
plip0: ...
lo0: ...
If I try:
#ping (the gateway)
all packets are lost. For this reason, I've tryed a static IP configuration like this:
but the gateway does not respond. So it is useless to try with a second guest system.
Please help. Sorry for my bad english.

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