No luck, the isp supplied 502t is a pos to put it plainly.
What would be really awesome is if Dlink could supply firmware that would erase the isp rubbish and place generic firmware back on so that upgrading would then be cake rather than going on experiences of others and trying it thier way and bricking the firmware
There are 502t models out there with half bridge which a friend of mine has and once i've got him to buy the dgl-4100 shall try it with that.
But I did find a solution for PPPoA / New Zealand.
Purpose of this exercise:
- To enable Half bridge in the modem so that it does not do any routing just passes on the internet information to your specified router which will do the dhcp etc.
- To enable multiple xbox 360's online simultaneously with open nat
1 x Dynalink RTA1335 ADSL Router/Modem
1 x Dlink DGL-4100 (Firmware 1.3 & 1.6 is Xbox live compatible)
Follow Dynalinks instructions here for setting up the modem http://tinyurl.com/5a36vk
Once you're done put it into the wan port of the 4100 and do the connection wizard and you should be good to go.
You may need to do some ip changing but it's normally fairly straight forward
I hope this helps future people