# {{ ansible_managed }}
# Bridge for emulator TAP interfaces. Separate from 50-cloud-init.yaml on
# purpose: cloud-init rewrites its own file, and it only claims the primary
# NIC (matched by MAC), so this file can own the second NIC without conflict.
network:
  version: 2
  ethernets:
    {{ tap_bridge_member }}:
      match:
        macaddress: "{{ tap_bridge_member_mac }}"
      set-name: {{ tap_bridge_member }}
      dhcp4: false
      dhcp6: false
      accept-ra: false
      # optional: do not let systemd-networkd-wait-online block boot for a port
      # that has no L3 config and may have nothing plugged behind it.
      optional: true
  bridges:
    {{ tap_bridge_name }}:
      interfaces: [{{ tap_bridge_member }}]
      dhcp4: false
      dhcp6: false
      accept-ra: false
      optional: true
      parameters:
        # STP off + zero forward delay: taps appear and disappear every time an
        # emulated machine is powered on. With STP the bridge would hold each
        # new port in learning state for ~15s and silently drop the guest's
        # first packets, which looks exactly like a broken guest TCP/IP stack.
        # Safe here because this bridge has a single uplink -- no loop is
        # possible.
        stp: false
        forward-delay: 0