I have my Pi Zero W set up as a wireless bridge, bridging from wired
eth0 to wireless
wlan0; of course, wlan0 operates in AP mode. So far so good. Now I'm noticing that when I forgot to plug in the USB Ethernet adapter for
eth0 into my Pi Zero W before boot, it won't be added as a bridge port to my bridge
br0 automatically. How can I ensure that
eth0 always gets added to the bridge, even if I plug
eth0 into the Pi only later?
/etc/network/interfaces has to say this:
auto eth0 allow-hotplug eth0 ... auto br0 bridge_ports eth0 wlan0 ...
When I hot-plug
brctl show only shows
br0, but not