Re: [RFC PATCH net-next 0/3] Make the PHY library stop being so greedy when binding the generic PHY driver

On Fri, Sep 03, 2021 at 07:58:50PM +0100, Russell King (Oracle) wrote:

On Fri, Sep 03, 2021 at 07:21:19PM +0200, Andrew Lunn wrote:

quoted

Hi Russell

Do you have

auto brdsl

in your /etc/network/interfaces?

Looking at /lib/udev/bridge-network-interface it seems it will only do
hotplug of interfaces if auto is set on the bridge interface. Without
auto, it only does coldplug. So late appearing switch ports won't get
added.

I think you're looking at this:

[ "$BRIDGE_HOTPLUG" = "no" ] && exit 0

?

No, i was meaning this bit:

   for i in $(ifquery --list --allow auto); do
        ports=$(ifquery $i | sed -n -e's/^bridge[_-]ports: //p')

Inside this is the actual adding of the interface to the bridge:

                                        brctl addif $i $port && ip link set dev $port up


$ /sbin/ifquery --list --allow auto
lo
eth0
br42

I have various tap interfaces for VMs which get added to br42 when
they appear.

     Andrew