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Date:      Thu, 14 May 2009 07:53:32 +0200
From:      "marco\.borsatino\@poste\.it" <marco.borsatino@poste.it>
To:        freebsd-questions@freebsd.org
Subject:   virtual network with qemu
Message-ID:  <KJMDP8$6CAA3C7A9F3970B8D7BF5817B1C9CC09@poste.it>

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Hi to all.
I'd like to implement a little virtual network using QEMU 0.10.2, but, un=
til now, I have failed.
This is the situation.
Host: AMD 64 running FreeBSD 7.2
#ifconfig
nfe0: flags=3D8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1=
500
	options=3D10b<RXCSUM,TXCSUM,VLAN_MTU,TSO4>
	ether 00:15:f2:44:2d:f9
	inet 192.168.0.2 netmask 0xffffff00 broadcast 192.168.0.255
	media: Ethernet autoselect (100baseTX <full-duplex>)
	status: active
plip0: flags=3D108810<POINTOPOINT,SIMPLEX,MULTICAST,NEEDSGIANT> metric 0 =
mtu 1500
lo0: flags=3D8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
	inet6 fe80::1%lo0 prefixlen 64 scopeid 0x3 
	inet6 ::1 prefixlen 128 
	inet 127.0.0.1 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.im=
g
Alfter a long time, the installation of the guest system has been complet=
ed.
When the installation program asked for information about network configu=
ration, as a 
first step, I chose DHCP configuration and, as usualy, the network has be=
en set
like this:
IP 10.0.2.15/255.255.255.0
gateway 10.0.2.2
nameserver 10.0.2.3
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 starte=
d qemu like this:
#qemu -L /usr/local/share/qemu -localtime -net nic,macaddr=3D00:15:f2:44:=
2d:01 -net socket,mcast=3D230.0.0.1:1234 -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=3D8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 15=
00
  ether 00:15:f2:44:2d:01
  media: Ethernet 10baseT/UTP <full-duplex>
plip0: ...
lo0: ...
If I try:
#ping 10.0.2.2 (the gateway)
all packets are lost. For this reason, I've tryed a static IP configurati=
on like this:
IP 10.0.2.4/255.255.255.0
gateway 10.0.2.2
nameserver 10.0.2.3
but the gateway does not respond. So it is useless to try with a second g=
uest system.
Please help. Sorry for my bad english.
Marco





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