I'm running into some weird issues with IPv6. I'm on the ATT UVERSE Power tier and am using the NVG589 in passthrough mode.
I am cascading my RT-N66U (with Merlin firmware) behind the NVG589.
Right now I have my RT-N66U IPv6 settings set to "Native" and I'm able to get Ipv6 working. The good news is that with "Native" I get 45+Mbps IPv6 speeds which are similar to what I can get with IPv4. The bad news is that now certain webpages will not load. Traceroute to www.facebook.com for example, completely times out.
If I turn off "Native" on my RT-N66U and switch on "Tunnel 6rd" I can connect to IPv6, but the bad news is that speed drops from 45+Mbps to 24Mbps. I have no idea why this happens. I can however, access Facebook and other sites that were not loading when my RT-N66U was set to "Native."
So, I need some help here. I am not sure what's going on. I can get IPv6 to work using both "Native" and "Tunnel 6rd" when set on my RT-N66U, but both ways are crippled due to lots of sites not load vs. a substantial drop in speed.
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