OK, I reckon I've tried every combination of the following
PAP, CHAP and AUTO
Full username and also minus @optusnet.com.au
On the old 8980 and brand new Archer D20. I followed the instructions in the above link to the letter. Still the same result.
The only I wasn't sure of was this passage "just remember to also set the wireless ssid and passphrase with wpa2 and aes encryption"
Aside from that I'm not sure what else I'm doing wrong. This should be straightforward right?
I don't know what to add as I mentioned before I bridged the Sagemcom because I needed the home phone (only because my wife insists on it) so I have not connected a modem directly. I have read nunerous people do so can only suggest keep googling.
When I have a bit more time I will see what I can come up with and let you know if I can be of any help.
Yes, it does. Add you have seen from my posts I needed to add static routes and different DNS addresses.