https://www.optus.com.au/support/answer/enabling_your_telstra_modem_router_to_work_with_optus_20327
Enabling your Telstra modem/router to work with Optus
telstra modemto workenablingrouteroptus
https://www.tp-link.com/pk/support/faq/1062/
Why does my ADSL modem get an abnormal IP on Telstra BigPond and how to fix it? | TP-Link Pakistan
Why does my ADSL modem get an abnormal IP on Telstra BigPond and how to fix it?