I've just bought a Linksys WAG200G ADSL Home Gateway and I can't get it to connect to the internet.  The network works fine and the DSL info part of the config system shows the DSL connection but no internet. 

Here is the connection log:

Mon, 2002-09-09 01:07:54 - Initialize LCP.
Mon, 2002-09-09 01:07:54 - Plugin pppoa loaded.
Mon, 2002-09-09 01:07:54 - PPPoA Plugin Initialized
Mon, 2002-09-09 01:07:54 - Plugin pppoa called.
Mon, 2002-09-09 01:07:54 - PPPoATM setdevname_pppoatm - SUCCESS
Mon, 2002-09-09 01:07:54 - Options file - /etc/ppp/options.0.100.
Mon, 2002-09-09 01:07:54 - pppd 2.4.1 started by root, uid 0
Mon, 2002-09-09 01:07:54 - setting line discipline hook
Mon, 2002-09-09 01:07:54 - connect_pppoatm_ses...Enter
Mon, 2002-09-09 01:07:54 - connect_pppoatm_ses: socket created fd - 0x6.
Mon, 2002-09-09 01:07:54 - connect_pppoatm_ses: setsockopt called.
Mon, 2002-09-09 01:07:54 - connect_pppoatm_ses: connect successful.
Mon, 2002-09-09 01:07:54 - Calling line discipline hook
Mon, 2002-09-09 01:07:54 - Setting pppoatm line discipline.
Mon, 2002-09-09 01:07:54 - vc encaps.
Mon, 2002-09-09 01:07:54 - using channel 17
Mon, 2002-09-09 01:07:54 - Using interface ppp0
Mon, 2002-09-09 01:07:54 - Connect: ppp0 <-->
Mon, 2002-09-09 01:07:54 - LCP is allowed to come up.
Mon, 2002-09-09 01:07:55 - Remote message: Authentication failure
Mon, 2002-09-09 01:07:55 - PAP authentication failed
Mon, 2002-09-09 01:07:55 - LCP down.
Mon, 2002-09-09 01:07:55 - This terminate is called from lcp_finished()
Mon, 2002-09-09 01:07:55 - Connection terminated.
Mon, 2002-09-09 01:07:55 - Exit.

Encapsulation: RFC 2364 PPPoA
Multiplexing: VC
QOS Type: UBR
Autodetect: Disable
VPI: 0
VCI: 100
DSL Modulation: Multimode

Username: xxxxx.xadsl@xtra.co.nz
Password: xxxxxx
Keep Alice: Redial period 30secs

Host Name: blank
Domain Name: blank
MTU: Auto