> Adding a dummy device to a bridge doesn't do much for you. The dummy > device never has any incoming packets, and any outgoing packets are > discarded. I understand that. But I still want to do it like this. As I mentioned, I'm trying to make a setup that mirrors a physical setup; i.e. two physical computers, each with one NIC plugged into a hub which itself has no IP address. The closest I can get to this with my (kvm VM) is: a physical machine with a dummy0 interface plugged into br0 and a VM with a virtual twisted cable with its eth0 (which via the VM:eth0<->PM:tap0 virtual crossover cable) plugged into br0. > The veth driver might be more useful for you. If you have the veth > module buillt (CONFIG_VETH), you can create an interface pair using: > $ ip link add name veth0 type veth peer name veth1 > This gives you a pair of ethernet devices (veth0 and veth1) set up so > that a packet sent out on any one is received on the other. With this, > you can make one of these a bridge port and give the other end the IP > address. So you mean without br0 at all? If so then, no, I really want to do it with br0. Simply: why, when this works: >> brctl addbr br0 >> ifconfig br0 192.168.1.42 up >> ifconfig dummy0 0.0.0.0 >> brctl addif br0 dummy0 >> brctl addif br0 tap0 does this not work: >> brctl addbr br0 >> ifconfig dummy0 192.168.1.42 up >> brctl addif br0 dummy0 >> brctl addif br0 tap0 ? Thanks! Alexis _______________________________________________ Bridge mailing list Bridge@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/bridge
