TanneR most "modern" wifi networks automatically assign you an IP
Yes, that's DHCP which can be activated, for testing purposes, by just running
dhcpcd -1 -w iwm0.
But, for installation of NetBSD, you should follow what the HOWTO says:
For advice on configuring WiFi, see the 802.11 documentation. You can do this in the installer
by exiting the installer and dropping to a shell, then entering the installer again with exit.
Let the installer do the networking stuff since the card is up.
What interests me here is that you're not seeing this message whch you mentioned before:
iwm0: autoconfiguration error: fatal firmware error
iwm0: autoconfiguration error: could not init bt coex (error 35)
Can you boot normally--ie. without the
-v -x flags--and see if your card still gives that error? Sometimes, turning on debug messages slows down/changes somewhat the order of the kernel's running of various functions and that can make driver bugs appear/disappear.
TanneR I really don't want to mess more/anything up since, apparently the WiFi card is not the issue.
😁 What a newbie statement that is--I'll bet all the old hands on the board here are just sniggering in their sleeves at this.
Believe me mate, this is just the first of the many install you'll be doing. Don't be afraid of making a mess--it's how you learn.