You're right John, that is a Validated(External) article that should be visible on Support (with or without a contract).
I've opened a case with internal IT about it, and the KBA-4423 should be found again by tomorrow.
Here is the important details from the article Chase:
Island-NNNNNN is available on non-mesh or standalone APs. It comes up when
- AP in factory default.
- Or, AP cannot reach its gateway.
Island WLAN gets disabled when,
- AP is no longer in factory default.
- And, AP can reach its gateway.
Customers who do not like seeing an Island SSID on their Standalone AP can manually disable them.
Login to AP via SSH and issue CLI commands:
set state wlan102 down
set state wlan103 down
Note: The wlanXXX may be different on 64mb and 128mb RAM model Access Points.
Use 'get wlanlist' to determine which wlans are available on your modle of AP.