On 2020-07-20 05:32, Daniel P. Berrange wrote:
On Sun, Jul 19, 2020 at 11:54:06AM +0100, Rui Correia wrote:
Greetings folks.
I've setup libvirtd on my manjaro linux laptop.
Got a couple of VM's running (Win10 and Debian10) through NAT without
any
issues.
This is what the current network diagram looks like and it works fine:
+-----------------------------------+
| +---------------------+ |
| | +----------+ | |
| | |Win 10 VM | | |
| | |10.1.1.10 | | |
| | +----------+ | |
| Laptop | | |
| Manjaro | +-------------+ | |
| 10.0.0.10 | |Debian 10 VM | | |
+-------->+ | |10.1.1.11 | | |
| | | +-------------+ | |
| | |NAT | |
| | |10.1.1.0/24 | |
| | +---------------------+ |
+------------+ | +-----------------------------------+
|router | |
|switch +---+
|10.0.0.0/24 | | +---------+
+------------+ | |Desktop |
+-------->+Manjaro |
|10.0.0.11|
+---------+
But now I need the debian machine to be accessible from another host
on the
lan 10.0.0.0/24 which of course is outside the host.
That network diagram would look like this:
+-----------------------------------------+
| +------------------+ |
| | +----------+ | |
| | |Win 10 VM | | |
| | |10.1.1.10 | | |
| | NAT +----------+ | |
| | 10.1.1.0/24 | |
| +------------------+ |
| Laptop |
+-------->+ Manjaro +------------------------+ |
| | 10.0.0.10 | +-------------+ | |
| | | |Debian 10 VM | | |
| | | |10.2.2.10 | | |
| | | Routed +-------------+ | |
+------------+ | | | 10.2.2.0/24 | |
|router | | | +------------------------+ |
|switch +---+ +-----------------------------------------+
|10.0.0.0/24 | |
+------------+ |
|
| +---------+
| |Desktop |
+-------->+Manjaro |
|10.0.0.11|
+---------+
So, I've setup a 'routed network' for the Debian 10 VM but it's not
working
as I would expect.
The host can ping the Debian VM and the Debian VM can ping the host
but the
Debian VM cannot ping the router 10.0.0.1 or any ip address on the
internet.
I've been using Virtual Machine Manager to set everything up.
And this is how the routed network is configured
<network connections="1">
<name>routed</name>
<uuid>970a25f7-29b6-4a6b-b890-f593eae4fc15</uuid>
<forward dev="wlo1" mode="route">
<interface dev="wlo1"/>
</forward>
<bridge name="virbr2" stp="on" delay="0"/>
<mac address="52:54:00:bf:35:42"/>
<domain name="routed"/>
<ip address="10.2.2.1" netmask="255.255.255.0">
<dhcp>
<range start="10.2.2.2" end="10.2.2.254"/>
</dhcp>
</ip>
</network>
Any idea on what i might be doing wrong?
Is net.ipv4.ip_forward set to 0 ?
He left out, and I should hasten to make clear, it *should* be set to 1
to enable routing:
ken@pirouter:/proc/sys/net/ipv4$ cat /proc/sys/net/ipv4/ip_forward
1
And, also, HOLY CROW, you must be an ASCII charting demigod. Did you
use software to make those, or do them yourselves? Either way, I'm
impressed...
-Ken
