[libvirt] [PATCH 0/1] Added Networking API to change/create/etc. hostonly/internal network in VirtualBox
6:14 a.m.
Hi All:
[PATCH 0/1]: Contains sample xml file showing features supported so far.
[PATCH 1/1]: Contains the patch for adding Networking API to
change/create/etc. hostonly/internal network in VirtualBox
Regards,
Pritesh
4:41 a.m.
On Wed, Apr 29, 2009 at 01:14:10PM +0200, Pritesh Kothari wrote:
Hi All:
[PATCH 0/1]: Contains sample xml file showing features supported so far.
[PATCH 1/1]: Contains the patch for adding Networking API to
change/create/etc. hostonly/internal network in VirtualBox
<network>
<name>vboxnet0</name>
<uuid>786f6276-656e-4074-8000-0a0027000000</uuid>
<forward mode='hostonly'/>
This line isn't neccessary - AFAICT there is no forwarding off traffic
from hostonly networks to the LAN. Just set VIR_NETWORK_FORWARD_NONE
for this.
<bridge stp='off' forwardDelay='0' />
This looks like a bug in our XML formatter - it shouldn't be generating
a <bridge> tag if there is no bridge :-)
<ip address='192.168.27.6'
netmask='255.255.255.0'>
<dhcp>
<range start='192.168.27.7' end='192.168.27.8' />
<host mac='78:16:3e:4d:c7:9e' name='vboxnet0'
ip='192.168.27.10' />
</dhcp>
</ip>
The IP address is confusing me a litle here. I'm not sure why there
are two different IP addresses for the host.
In my test box I have an interface
vboxnet0 Link encap:Ethernet HWaddr 00:76:62:6E:65:74
inet addr:192.168.56.1 Bcast:192.168.56.255 Mask:255.255.255.0
inet6 addr: fe80::276:62ff:fe6e:6574/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:25 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:5320 (5.1 KiB)
And the XML is shown as
<ip address='192.168.56.100' netmask='255.255.255.0'>
<dhcp>
<range start='192.168.56.101' end='192.168.56.254' />
<host mac='00:76:62:6e:65:74' name='vboxnet0'
ip='192.168.56.1' />
</dhcp>
</ip>
What I'd expect though, is that the IP address of the interface is
listed as the <ip address=''> tag, not as a <host> tag - the latter
is for defining static IP mapping for guest VMs. So I'd expect the
XML to loook like
<ip address='192.168.56.1' netmask='255.255.255.0'>
<dhcp>
<range start='192.168.56.101' end='192.168.56.254' />
</dhcp>
</ip>
But what is this second IP address virtualbox seems to have for the DHCP
server ?!?!
</network>
Daniel
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5:10 a.m.
> change/create/etc. hostonly/internal network in VirtualBox
>
> <network>
> <name>vboxnet0</name>
> <uuid>786f6276-656e-4074-8000-0a0027000000</uuid>
> <forward mode='hostonly'/>
This line isn't neccessary - AFAICT there is no forwarding off traffic
from hostonly networks to the LAN. Just set VIR_NETWORK_FORWARD_NONE
for this.
Will do this.
> <bridge stp='off' forwardDelay='0' />
This looks like a bug in our XML formatter - it shouldn't be generating
a <bridge> tag if there is no bridge :-)
will post a patch for this as well.
> <ip address='192.168.27.6'
netmask='255.255.255.0'>
> <dhcp>
> <range start='192.168.27.7' end='192.168.27.8' />
> <host mac='78:16:3e:4d:c7:9e' name='vboxnet0'
ip='192.168.27.10' />
> </dhcp>
> </ip>
The IP address is confusing me a litle here. I'm not sure why there
are two different IP addresses for the host.
In my test box I have an interface
vboxnet0 Link encap:Ethernet HWaddr 00:76:62:6E:65:74
inet addr:192.168.56.1 Bcast:192.168.56.255 Mask:255.255.255.0
inet6 addr: fe80::276:62ff:fe6e:6574/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:25 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:5320 (5.1 KiB)
And the XML is shown as
<ip address='192.168.56.100' netmask='255.255.255.0'>
<dhcp>
<range start='192.168.56.101' end='192.168.56.254' />
<host mac='00:76:62:6e:65:74' name='vboxnet0'
ip='192.168.56.1' />
</dhcp>
</ip>
What I'd expect though, is that the IP address of the interface is
listed as the <ip address=''> tag, not as a <host> tag - the latter
is for defining static IP mapping for guest VMs. So I'd expect the
XML to loook like
<ip address='192.168.56.1' netmask='255.255.255.0'>
<dhcp>
<range start='192.168.56.101' end='192.168.56.254' />
</dhcp>
</ip>
But what is this second IP address virtualbox seems to have for the DHCP
server ?!?!
Oh the main thing here is VirtualBox has its own dhcp server and <ip
address='192.168.56.1' netmask='255.255.255.0'> refers to its IP
address and
not the interface IP address. now the vboxnet0 interface is just like any
other interface to dhcpserver and thus its IP address is under the <host> tag.
the <host> tag currently needs to be specified if you want to give a static
config to the hostonly adaptor, else in 2.5+ it will support automatic IPconfig
through the same dhcp server.
Hope that explains it.
Regards,
Pritesh
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days inactive
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2 comments
2 participants
participants (2)
-
Daniel P. Berrange -
Pritesh Kothari