RE: [libvirt] Help with bridged networking

Subject: RE: [libvirt] Help with bridged networking From: lutter(a)redhat.com To: observer1(a)hotmail.es Date: Fri, 27 Feb 2009 08:48:13 -0800 On Fri, 2009-02-27 at 00:55 +0000, Jesus Urroa wrote: > My mistake I see the lines for the ip config commented out in the file > and I place them again > Anyway I remove the card from the bridge to simplify the problem a > little, this the output of brctl show for the bridge using only xen > (no libvirt at all) and using kvm with libvirt and running only 2 vms: > > worknet 8000.feffffffffff no vif1.0 > vif4.0 > vif5.0 > vif6.1 > vif7.1 > vif8.0 > > worknet 8000.00ff52959073 no vnet0 > > vnet3 With the non-Xen setup, your bridge should have the same IP address as the enslaved NIC. What exactly is not working ? Can VM's on the same bridge ping each other ? Did you add teh following iptables rule (to forward packages from the bridge to the outside): # echo "-I FORWARD -m physdev --physdev-is-bridged -j ACCEPT" > /etc/sysconfig/iptables-forward-bridged # lokkit --custom-rules=ipv4:filter:/etc/sysconfig/iptables-forward-bridged # service libvirtd reload Otherwise, your VM;s can't talk to the outside. David