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Guests networking using driver domain
- To: "xen-users@xxxxxxxxxxxxxxxxxxxx" <xen-users@xxxxxxxxxxxxxxxxxxxx>, "xen-users@xxxxxxxxxxxxxxxxxxxx" <xen-users@xxxxxxxxxxxxxxxxxxxx>
- From: Andrea Stevanato <Andrea.Stevanato@xxxxxxxxxxxxxxx>
- Date: Thu, 3 Mar 2022 10:32:02 +0000
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- Delivery-date: Thu, 03 Mar 2022 10:33:06 +0000
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- Thread-topic: Guests networking using driver domain
Hi all,
I'm trying to configure two guests that can communicate with each other using a "virtual" network card exploiting the netback and netfront driver.
The first guest is created with the following configuration:
name = "guest0"
kernel = "/media/sd-mmcblk0p1/Image"
ramdisk = "/media/sd-mmcblk0p1/rootfs.cpio.gz"
extra = "console=hvc0 rdinit=/sbin/init root=/dev/ram0"
memory = 1024
vcpus = 2
Once it is up and running, I create and setup the bridge:
# brctl addbr xenbr0
# ip addr add 10.0.3.1/24 dev xenbr0
# ip link set dev xenbr0 up
Then I configure the udhcpd server with the following configuration (/etc/udhcpd.conf):
start 10.0.3.15
end 10.0.3.254
interface xenbr0
option subnet 255.255.255.0
And start it with: `# udhcpd`.
The second guest is created with the following configuration:
name = "guest1"
kernel = "/media/sd-mmcblk0p1/Image"
ramdisk = "/media/sd-mmcblk0p1/rootfs.cpio.gz"
extra = "console=hvc0 rdinit=/sbin/init root=/dev/ram0"
memory = 1024
vcpus = 2
vif = [ 'bridge=xenbr0, backend=guest0' ]
Once it is up and running on the guest0 the new interface (vifX.0) is created correctly, however on the guest1 the eth0 interface is not present.
If I do the exact same thing on dom0, instead of guest0 (without attaching the eth0 to the bridge, since I do not need to reach outside), the eth0 on the guest is created correctly and get the 10.0.3.15 IP address.
What I'm doing wrong?
Andrea
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