Enable IPv6 on your newer CenturyLink modem


CenturyLink – less than full speed

Read some of these about ideas what to try to fix it:

“I have CenturyLink 940 Mbps fiber and I get the full speed as advertised to Ethernet-connected computers. Tests using the¬†Speedtest.net¬†desktop apps generally return a faster result than browser-based tests.
Previously, I had an Asus AC3100 router and now I have a pfSense box.
Taking the CenturyLink modem out of the equation helped get both to full speed, as did make sure “cut through forwarding” was enabled on the Asus.
To get rid of the modem, most CenturyLink customers will have to enable VLAN tagging. Google “CenturyLink fiber VLAN tagging” and you’ll find plenty of information.
Good luck. We’ve been super happy with our CenturyLink fiber service.”