I installed shibby 1.28.0000 MIPSR2-093 K26 USB AIO on my ASUS RT-N66U.
Followed the routines for creating a guest WLAN for tomato firmwares.
Created a br1 as second LAN.
Created a new WLAN (3) connection connected to br1.
Created Bridge wl0.1 to LAN1-br1.
Set up the Guest WLAN under virtual wireless wl0.1 (2,4 GHz)
I see the Guest WLAN in the status overview on the Tomato startpage.
In my laptop I see the Guest WLAN avaiable but the signal strength is 0 %.
Also when checking InSSIDer, is see the Guest WLAN but without any power. It's not possible to connect to it either.