Change the default LAN address settings.

change in /etc/config/networking

~# uci commit networking

~# /etc/init.d/network restart

Allow access to a bridged modem

Give the interface connected to the modem an IP address from the net the modem expects to be connected from (in this instance, 192.168.1.254)

~# ifconfig eth0.1 192.168.1.1

You can now access the modem's interface *from* the OpenWRT router. If you want access from behind the router you need to configure iptables http://wiki.openwrt.org/doc/howto/access.modem.through.nat

Bridged modem shows full adsl stats with a

adsl info expand=enabled