Guide to Bridged Networking =========================== To set up bridged networking for the macOS VM, use one of the following methods: ## Using /etc/network/interfaces It is possible to create the bridge and tun/tap interfaces by adding the following lines to `/etc/network/interfaces`. Replace `DEVICENAME` with your ethernet card's device name, and `MYUSERNAME` with the user that is starting the VM. ``` auto br0 iface br0 inet dhcp bridge_ports DEVICENAME tap0 auto tap0 iface tap0 inet dhcp pre-up tunctl -u MYUSERNAME -t tap0 ``` ## Using NetworkManager You can use NetworkManager to control the bridge and tun/tap interfaces, by creating them with the following commands. Replace `DEVICENAME` with your ethernet card's device name. ### Make the Bridge ``` nmcli connection add type bridge \ ifname br1 con-name mybridge ``` ### Attach Bridge to Ethernet ``` nmcli connection add type bridge-slave \ ifname DEVICENAME con-name mynetwork master br1 ``` ### Make the Tun/Tap ``` nmcli connection add type tun \ ifname tap0 con-name mytap \ mode tap owner `id -u` ``` ### Attach Tun/Tap to Bridge ``` nmcli connection mod mytap connection.slave-type bridge \ connection.master br1 ``` ## Attach Bridge to QEMU Once you have set up the bridge and tun/tap on the host, you'll have to add the following line to `basic.sh`, replacing `-netdev user,id=net0`. Change `tap0` to your corresponding device name. ``` -netdev tap,id=net0,ifname=tap0,script=no,downscript=no \ ``` You can optionally use the `vmxnet3` driver for higher performance compared to the default e1000. Note that replacing it requires macOS El Capitan or higher. ``` -device vmxnet3,netdev=net0,id=net0,mac=52:54:00:c9:18:27 \ ```