I am trying to run a new (well, never used...)  Dynalink RTA1320 in half-bridge mode with a TL-WR1043ND and am following the write-up on ben.geek.  It seems clear this would be easier if I were not on TelstraClear (or if I were at least not under contract...).

The situation is that if a PC is directly connected to the RTA1320 with PPP IP Extension enabled, I can use the internet just dandy although I cannot see the modem admin pages any more (thanks to the TCL gateway oddity). If I introduce the WR1043ND in Dynamic IP mode and go via that, I can no longer get out to the internet.

In the comments under the walk-through I note there is a hack documented by Eileen to get around this. However, I have two issues with that:

1) I cannot get to my modem's admin pages to implement the change suggested.
2) I don't understand the hack (my shame knows no bounds).

Maybe I could get around (1) by resetting the router and implementing Eileen's hack before enabling PPP IP extension. But what exactly should I be doing when I do that? Grateful for pointers or any other ideas.

I'd like to get the basics working before going to Gargoyle but if Gargoyle would help, I could always do that first.

TIA.