How can I wait for a USB Ethernet adapter to appear to configure lagg on startup?

[Freddie Cash]

On Thu, May 17, 2018 at 7:30 PM, Masachika ISHIZUKA <ish at amail.plala.or.jp>
wrote:

> Hi.
>
> I use a nootbook machine.
> As this machine has no internal nic, I use a USB ethernet adapter(ue0).
> I want to configure lagg0 of ue0 and iwm0, but I must wait to start
> /etc/rc.d/netif until appearing the ue0.
> I'm using patched netif as follows, but I must keep it whenever
> 'mergemaster -Ui' is run.
> Is there a more elegant way?
>

​Your situation is pretty much the entire reason for the existence of
​/etc/rc.d/netwait  Read through the comments in that script for more
information.  And the comments in /etc/defaults/rc.conf for netwait.

Something along these lines in /etc/rc.conf is what you want (along with
your normal ifconfig_* and wpa_* entries):

netwait_if="ue0 iwm0"

That will cause the boot process to pause and wait for those two interfaces
to appear before continuing on with the network configuration.

There are various other netwait_* configuration entries that can used as
well.

-- 
Freddie Cash
fjwcash at gmail.com