Roaming between APs in some cases causes firmware crash on Intel Wireless WiFi Link 4965. Unluckily iwn(4) driver doesn't restart it until interface manually reset with ifconfig down/up. Log showing the problem with enabled debugging is attached. Fix: Patch attached with submission follows:
Responsible Changed From-To: freebsd-bugs->freebsd-wireless Over to maintainer(s).
batch change: For bugs that match the following - Status Is In progress AND - Untouched since 2018-01-01. AND - Affects Base System OR Documentation DO: Reset to open status. Note: I did a quick pass but if you are getting this email it might be worthwhile to double check to see if this bug ought to be closed.