What's new
  • SNBForums Code of Conduct

    SNBForums is a community for everyone, no matter what their level of experience.

    Please be tolerant and patient of others, especially newcomers. We are all here to share and learn!

    The rules are simple: Be patient, be nice, be helpful or be gone!

RT-AC87U: IPv6 speeds vs IPv4 speeds

millercentral

Occasional Visitor
(TL;DR: Does the AC87U CTF hardware acceleration work with IPv6 traffic?)

I recently got symmetrical gigabit internet, and so far I've been really happy with the performance of my AC87U with this service.

But now I've started looking into enabling IPv6 support, and I'm trying to understand the speed discrepancies. This speedtest has me concerned (note, my service is not with Comcast, but their speedtest is the only gigabit-capable test that does both IPv4 and IPv6 testing that I know of):

Comcast Test.png


My router connects directly to the ISP/internet via PPPoE (there is no modem) and my ISP uses a "6rd" style IPv6 tunneling technique, here are the details from the System Log tab:

Code:
          IPv6 Connection Type: Tunnel 6rd
              WAN IPv6 Address: 2602:##:####:####::/24
              WAN IPv6 Gateway: ::205.171.2.64
              LAN IPv6 Address: 2602:##:####:####::1/56
   LAN IPv6 Link-Local Address: fe80::ae9e:17ff:fe95:1920/64
               LAN IPv6 Prefix: 2602:##:####:####::/56
                   DNS Address: 2001:428::1 2001:428::2

I know their could be a lot of reasons why the two stacks speedtest differs so much, but my first question is: Does anyone know if the AC87U "NAT Acceleration" (aka "Cut Through Forwarding") works with IPv6 traffic?

Other suspects for the discrepancy include: The IPv6 SpeedTest server doesn't support gigabit speeds, or IPv6 traffic is throttled by the ISP IPv6 tunnel gateway, or something else I haven't thought of yet. Any suggestions on how to get to the bottom of this would be appretiated.

In the end IPv6 is not critical for my needs and I could just turn it off, but I'd love to understand what's going on.

Thanks for any insight.
 

Latest threads

Support SNBForums w/ Amazon

If you'd like to support SNBForums, just use this link and buy anything on Amazon. Thanks!

Sign Up For SNBForums Daily Digest

Get an update of what's new every day delivered to your mailbox. Sign up here!
Back
Top