On Thu, Feb 13, 2020 at 09:17:48AM +0000, Stefan Hajnoczi wrote: > On Tue, Feb 11, 2020 at 11:25:32AM +0100, Stefano Garzarella wrote: > > Do you want to mention that loopback works in the guest and on the host > since Linux vX.Y and before that it only worked inside the guest? I didn't mention it, because it was only supported by some transports (vmci, virtio), but it makes sense to say it, I'll add. > > > @@ -164,6 +164,16 @@ Consider using > > .B VMADDR_CID_ANY > > when binding instead of getting the local CID with > > .BR IOCTL_VM_SOCKETS_GET_LOCAL_CID . > > +.SS Local communication > > +The > > +.B VMADDR_CID_LOCAL > > +(1) can be used to address itself. In this case all packets are redirected > > +to the same host that generated them. Useful for testing and debugging. > > This can be rephrased more naturally: > > .B VMADDR_CID_LOCAL > (1) directs packets to the same host that generated them. This is useful > for testing applications on a single host and for debugging. Sure, it is better, I'll fix. Thanks, Stefano