Boot freeze 11.0p3 during network initialization

[Jan Kokemüller]

> The boot hang occurred again today.  I noted the point of the hang and
> rebooted; the log from the good boot with annotation of the previous hang
> point is here [1].

I've had similar hangs with lagg. There are some patches that might help:

https://reviews.freebsd.org/D6845
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=211689#c4

-Jan