Changing MAC Address not Changing Public IP Address (RT-ACRH13) (Cox Communications)

MissRarity

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May 13, 2017
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I'm having a problem that just started after my router (Asus RT-ACRH13) went through it's last update. Previously I could get a new public IP address by changing the MAC Address in the "Special Requirement from ISP" section of the settings and then restarting the modem. Now when I try to do that I seem to still get the same IP address each time. I have Cox Communications as an ISP.

Is there some other setting I need to look at or is there another way to force a new public IP address? Thank you.