I fix this?
>
> Hi Steven,
>
> You need to provide a bit more context/information like:
> What version of FreeBSD are you using?
> In what kind of environment (e.g. on the host itself or in a jail) are
> you executing the command?
>
> If you run the command from inside a jail, you would need to use VNET;
> otherwise, you can't edit the routes.
>
> Regards,
> Souji

Thanks for your reply.

I am running FreeBSD 14.1 BETA 3, but with updates from git.  No jails 
involved.

I was trying to get rtw88 wifi driver to work, I finally figured it 
out.  But in the process I noticed wlan0 wasn't creating a default 
route, like when I enable re0 or re1.

I was trying this command on the host.  I read the man page and the 
handbook, but they show the command as I invoked it.

Anyway, since I figured out the rc.conf entries, wlan0 gets an IP adx 
from dhcp and creates a default route.