Re: [libvirt-users] point-to-point connection between vm and host

Hi Jorge,

I am doing it by creating a bridge per vm.  I am not sure this is the best approach.  Hopefully, someone has a cleaner approach.

I did need to add forward mode "route", since the vm's network is independent of the host's network(s) and I am routing. <network>  <name>netdom4</name>  <forward mode="route"/>  <bridge name="virbr%d" stp="off" delay="0"/>  <ip address="10.0.0.1" netmask="255.255.255.252">  </ip> </network> If you are not routing, you can set this mode to "nat" so the vm will get sourced from host's address.  I haven't tried this, but I would assume the iptables nat rules are created automatically.  <forward mode="nat"/> Hope this helps, Paul -----Original Message----- From: libvirt-users-bounces(a)redhat.com [mailto:libvirt-users-bounces@redhat.com] On Behalf Of Jorge Somavilla Sent: Wednesday, April 13, 2011 7:29 AM To: libvirt-users(a)redhat.com Subject: [libvirt-users] point-to-point connection between vm and host Hi! hopefully someone can give me a hint with this: I need to create a vm with a point-to-point connection to the host using a /30 subnet. Right now i have this in the vm's xml for libvirt: <interface type="network" name="eth0" onboot="yes">   <source network="default"/>   <mac address="02:fd:00:00:01:00"/> </interface> Which brings up an interface in the vm that is configured later by a a daemon, getting to this: vnx@r2:~$ ifconfig eth0 eth0     Link encap:Ethernet  HWaddr 02:fd:00:00:01:00          inet addr:10.250.0.2  Bcast:10.250.0.3  Mask:255.255.255.252 While in the host the other interface is created: root@tau:/home/jorge/workspace/vnx# ifconfig r2-e0 r2-e0     Link encap:Ethernet  HWaddr 0a:81:b6:3c:24:15          inet addr:10.250.0.1  Bcast:10.250.0.3  Mask:255.255.255.252 However there is no connectivity between them, probably because of some mistake in the <interface> tag, perhaps a wrong 'type' attribute, but i haven't found out yet. I wouldn't want to create a bridge and connect both interfaces (vm's and host's) to the bridge, but to have this ptp, if possible. How would i go about doing that? thanks! Jorge _______________________________________________ libvirt-users mailing list libvirt-users(a)redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users