Any insights why my internet and general browsing feels much faster with IPv6 disabled in the router. My ISP is Xfinity and it provides native Ipv6 support with DHCPv6-PD. The same has been my observation with my previous router R6700AX. Also the internet speeds see a few Mbps increase with IPv4 only, although this is subjective. Definitely enabling IPV6 takes a toll on the router. It might be an ISP routing issue too.

Speed tests would have variance at different times, I feel that the web pages load a bit faster and pings are slightly faster with ipv6 disabled, although the difference in performance is not huge.

RS500 router - Internet feels much faster with IPV6 disabled?

18 Replies

FURRYe38
Guru - Experienced User
Jan 07, 2026
Ok. FYI, the beta FW mentioned was released so it's most current.
- coolwifi
  Luminary
  Jan 07, 2026
  You mean the latest FW for the RS500 router? It's still at 1.0.5.22 version.
  - FURRYe38
    Guru - Experienced User
    Jan 07, 2026
    Ya my bad. Was not fully awake when I posted that.
    
    Beta is still available if you wanna try it.
LaddieParker
Guide
Jan 04, 2026
I have an RS700 and Ookla Speedtest reports and extra 15 Mbps down and extra 13 Mbps up with IPv 6 disabled. Using Cloudflare DNS.
- coolwifi
  Luminary
  Jan 04, 2026
  Thanks, do the web pages seem to load a bit faster with ipv6 disabled? Also the latency has improved a bit. The YouTube videos in my Google TV streamer also load much faster.
  - LaddieParker
    Guide
    Jan 05, 2026
    To be honest I don't notice any difference at all. The difference between 935 Mbps and 950 Mbps is negligible.
FURRYe38
Guru - Experienced User
Jan 02, 2026
Tried custom IPv6 DNS to see if there is a difference?

Also there is beta FW available I believe for the RS500...
- coolwifi
  Luminary
  Jan 02, 2026
  Tried with custom ipv6 DNS, there's no difference. Will try the beta FW, but not sure if that will help with the dual stack ipv4 and ipv6 performance.
  - FURRYe38
    Guru - Experienced User
    Jan 02, 2026
    Let us know the results.
FURRYe38
Guru - Experienced User
Jan 02, 2026
What Firmware version is currently loaded?
What is the Mfr and model# of the Internet Service Providers modem/ONT the NG router is connected too?
Be sure your using a good quality LAN cable between the modem and router. CAT6A STP is recommended.

Using ISP detected IPv6 DNS or custom DNS?

Is Protection Engine enabled on the RS router?
- coolwifi
  Luminary
  Jan 02, 2026
  What Firmware version is currently loaded? Latest version 1.0.5.22
  What is the Mfr and model# of the Internet Service Providers modem/ONT the NG router is connected too? Hitron Coda 56 modem
  Be sure your using a good quality LAN cable between the modem and router. CAT6A STP is recommended. - Using Cat6a STP cable
  
  Using ISP detected IPv6 DNS or custom DNS? ISP DNS
  Is Protection Engine enabled on the RS router? No
  - FURRYe38
    Guru - Experienced User
    Jan 07, 2026
    Wondering if you had a chance to check the newest FW beta yet?
    
    coolwifi wrote:
    What Firmware version is currently loaded? Latest version 1.0.5.22
    What is the Mfr and model# of the Internet Service Providers modem/ONT the NG router is connected too? Hitron Coda 56 modem
    Be sure your using a good quality LAN cable between the modem and router. CAT6A STP is recommended. - Using Cat6a STP cable
    
    Using ISP detected IPv6 DNS or custom DNS? ISP DNS
    
    Is Protection Engine enabled on the RS router? No

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RS500 router - Internet feels much faster with IPV6 disabled?