Intermittent issues loading web pages on wired Fios connection

I am having intermittent issues with some web pages loading slowly when using my wired Fios internet connection. Sites that are likely to have this problem include mlb.com, youtube (when trying to play a video), and amazon (when trying to log in).

If I unplug the network cable, and move to the wireless network, the site loads almost immediately.

I have tried changing the DNS settings on the wired connection to use Google, 1.1.1.1, and Open DNS settings and the issue still persists when using those settings.

Does anybody have any ideas about what's going on here?

Accepted answers

Cang_Household

You need to check whether you have Intel NIC(s) in the mix. Intel NICs made before 2022 will drop IPv6 packets from Nokia ONTs. Intel NICs made after 2022 has been rectified on this issue.

All comments

taylorkaren

One other note: This behavior is observed when using a Windows 10 laptop. It is NOT observed when using a MacBook Pro running Mac OS Monterey (12.6.2) on this same wired connection.

Cang_Household

You need to check whether you have Intel NIC(s) in the mix. Intel NICs made before 2022 will drop IPv6 packets from Nokia ONTs. Intel NICs made after 2022 has been rectified on this issue.

taylorkaren

Thank you for this information. I do have an Intel NIC, and since it's in a laptop I bought in September, 2021, it would have the problem with dropping the IPv6 packets.

I have resolved the problem for now by disabling IPv6 on the router.

Cang_Household

No, disabling IPv6 is not a solution if you want to access IPv6-only websites.

The correct solution is to disable TCP/UDP Checksum Offload for IPv6 for the Intel NIC in the Windows Adapter settings. This is a win-win solution as you got to keep the IPv6 on and you got to use the Intel NIC.