A few days ago I described here my problem - both of my stationary computers out of sudden started having issues with loading pages. The Internet was fast, you could download anything you wanted, but you opened for example Youtube.com and it said 'no connection' or the video played 144p. Yotube pinged at 5ms but didn't work... lol...
I was advised to disable "IPv6 TCP checksum offload" and was happy for a moment... when I realized it helped only one of the computers. The other one...now even behaves worse… pages like Google Translate, with zero graphics, sometimes won't finish loading.
The problematic computer is using the built in network adapter on the Asus Z97-A board. What I just did was disabled this adapter, plugged in wifi adapter and all pages work great but I need to be able to use the cable. I am losing hope anyone can help me though, maybe some rare hardware incompatibility.
I have an idea to get a PCI-E Ethernet card but I am worried it can have the same issue. Any suggestions what brand or model should this card be to work flawlessly with Fios?
Thank you in advance for any help!
Solved! Go to Correct Answer
Your Asus board uses Intel I218-V, the first 10 NICs described in Intel's technical advisory.
Try disable the IPv6 Checksum Offload for UDP as well, as it needs UDP to pull an IPv6 from DHCP server.
If this does not work, you can try a $20 $15 PCIe x 1 to 2.5GbE from goCoax https://www.amazon.com/dp/B09F5P392Y?tag=gistb-20&linkCode=osi&th=1&psc=1 . It is a Realtek 8125B chip. Or a USB 3.0 to 2.5GbE dongle for $18-22 using Realtek 8156B chip.
Your Asus board uses Intel I218-V, the first 10 NICs described in Intel's technical advisory.
Try disable the IPv6 Checksum Offload for UDP as well, as it needs UDP to pull an IPv6 from DHCP server.
If this does not work, you can try a $20 $15 PCIe x 1 to 2.5GbE from goCoax https://www.amazon.com/dp/B09F5P392Y?tag=gistb-20&linkCode=osi&th=1&psc=1 . It is a Realtek 8125B chip. Or a USB 3.0 to 2.5GbE dongle for $18-22 using Realtek 8156B chip.
I'm going to try that, thanks so much!
Google services in particular also use QUIC. QUIC uses UDP transport, so it's not just DNS relying on UDP traffic. To clarify that a bit more for OP. Both TCP and UDP Checksum offload for IPv6 must be disabled, until Verizon can get the ONT bug fixed.
Does the server negotiate TLS 1.2 over TCP along with QUIC over UDP at the same time? Wouldn't it fall back to TLS 1.2 over TCP when QUIC over UDP is not responding.
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