https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=246031
Bug ID: 246031
Summary: Using regulatory domain FCC4 disables 5Ghz networking
Product: Base System
Version: 12.1-RELEASE
Hardware: amd64
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: wireless
Assignee: wirel...@freebsd.org
Reporter: tspa...@minions.com
I was setting up a laptop with FreeBSD 12.1-RELEASE and the installer set the
regulatory domain to FCC4, I noticed it didn't show any 5Ghz networks.
I switched it to FCC3, and suddenly there were 5Ghz networks.
I thought it might be a driver bug specific to iwn but it turns out that it
happens on my RPI3 with a ral USB nic.
I mentioned this to a friend who's very familiar with WiFi stuff on FreeBSD and
he mentioned that this sounded like a channel list issue.
I also realized finding info/documentation about the regulatory domain stuff on
FreeBSD was hard, so I just started digging into the source tree.
I read through src/lib/lib80211/regdomain.xml and I noticed the stanza for FCC4
had no entry for <netband mode="11na"> wheras FCC3 had an entry.
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