root@OpenWrt:~# nvram set 'wl0_ifname=br0'  
root@OpenWrt:~# nvram show | sort | grep br0
size: 7928 bytes (24840 left)
lan_ifname=br0
sh_interfaces=loc br0
sh_masq=br0 wds0.2
sh_routestopped=br0 -
wl0_ifname=br0
root@OpenWrt:~# nvram commit 
root@OpenWrt:~# nvram commit 
root@OpenWrt:~# nvram commit 
root@OpenWrt:~# nvram show | sort | grep br0
size: 7928 bytes (24840 left)
lan_ifname=br0
sh_interfaces=loc br0
sh_masq=br0 wds0.2
sh_routestopped=br0 -
wl0_ifname=br0
root@OpenWrt:~# 
root@OpenWrt:~# reboot
root@OpenWrt:~# Connection to 10.25.50.1 closed by remote host.
Connection to 10.25.50.1 closed.
[ (0) wwalker@behemoth:~/wireless_routers ]$ ssh root@10.25.50.1
sh: /usr/X11R6/bin/xauth: not found


BusyBox v1.00 (2005.05.25-20:30+0000) Built-in shell (ash)
Enter 'help' for a list of built-in commands.

  _______                     ________        __
 |       |.-----.-----.-----.|  |  |  |.----.|  |_
 |   -   ||  _  |  -__|     ||  |  |  ||   _||   _|
 |_______||   __|_____|__|__||________||__|  |____|
          |__| W I R E L E S S   F R E E D O M
          
root@OpenWrt:~# nvram show | sort | grep br0
size: 7929 bytes (24839 left)
lan_ifname=br0
sh_interfaces=loc br0
sh_masq=br0 wds0.2
sh_routestopped=br0 -
root@OpenWrt:~#